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Добірка наукової літератури з теми "Estuarine pollution Mathematical models"

Автор: Grafiati
Опубліковано: 10 грудня 2022
Оновлено: 29 січня 2023

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Статті в журналах з теми "Estuarine pollution Mathematical models"

1

Drozdov, I. Yu, A. V. Aleksakhin, Yu V. Aleksakhina, and D. A. Petrusevich. "Mathematical models of water pollution evaluation." IOP Conference Series: Earth and Environmental Science 684, no. 1 (March 1, 2021): 012026. http://dx.doi.org/10.1088/1755-1315/684/1/012026.

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2

Qin, Xuan Hua, and Li Li Zheng. "Mathematical Models for Analysis of Water Pollution." Applied Mechanics and Materials 209-211 (October 2012): 1941–47. http://dx.doi.org/10.4028/www.scientific.net/amm.209-211.1941.

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The water qualityr was considered by multiple regression analysis. The linear relationship between integrated pollution index and weight pollution index were obtained, the 5 day biochemical oxygen demanded and total nitrogen were the most important pollution factor by the relationship. And then, the two main components influencing water quality were given based on the principal component analysis affecting data..
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Penenko, V. V., and E. A. Tsvetova. "Mathematical Models for Studying Environment Pollution Risks." Journal of Applied Mechanics and Technical Physics 45, no. 2 (March 2004): 260–68. http://dx.doi.org/10.1023/b:jamt.0000017589.01975.6d.

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HARASAWA, Hideo, Koji AMANO, and Masaaki NAITO. "Mathematical models of water pollution 6. Mathematical models for waste water treatment process 1." Japan journal of water pollution research 8, no. 1 (1985): 53–65. http://dx.doi.org/10.2965/jswe1978.8.53.

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Bose, S. K., P. Ray, and B. K. Dutta. "Mathematical Models for Mixing and Dispersion in Forecasting and Management of Estuarine Water Quality." Water Science and Technology 19, no. 9 (September 1, 1987): 183–93. http://dx.doi.org/10.2166/wst.1987.0079.

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The dispersion or spread of a dissolved or suspended substance in an estuarine system occurs mainly due to the non-uniformity of velocity distribution, including turbulent fluctuations, shear stress at the boundary and surface stress caused by winds. The mixing and dispersion phenomena in rivers and estuaries are extremely important in water quality management and control. The development of a dispersion model in harmony with the nature of the flow field in a river or estuary is necessary in the estimation and correlation of dispersion parameters, called dispersion coefficients, which may, in general, be anisotropic in a multidimensional transport process. The earlier one-dimensional models have gradually given way to higher dimensional models for better description of the phenomena as well as for more accurate estimation of parameters. Field studies of dispersion of tracers have been the most important method of generating data for parameter estimation. A number of correlations for mixing and dispersion coefficients in terms of flow rates and other fundamental system parameters are available. The present study incorporates the analysis, assessment and applications of various dispersion and mixing models available. Also, a critical appraisal of the validity, inherent degree of uncertainty and the range of applications of different correlations has been incorporated.
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6

Timofeeva, Svetlana Semenovna, Marufjon Nabievich Musaev, Tulqin Vafoqulovich Botirov, and Aziz Azimjanovich Boboev. "MATHEMATICAL MODELS AND ALGORITHMS FOR PREDICTING SURFACE WATER POLLUTION." Theoretical & Applied Science 104, no. 12 (December 30, 2021): 1038–42. http://dx.doi.org/10.15863/tas.2021.12.104.113.

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AGUSTO, F. B., and O. M. BAMIGBOLA. "Numerical Treatment of the Mathematical Models for Water Pollution." Journal of Mathematics and Statistics 3, no. 4 (April 1, 2007): 172–80. http://dx.doi.org/10.3844/jmssp.2007.172.180.

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8

Cooper, W. W., H. Hemphill, Z. Huang, S. Li, V. Lelas, and D. W. Sullivan. "Survey of mathematical programming models in air pollution management." European Journal of Operational Research 96, no. 1 (January 1997): 1–35. http://dx.doi.org/10.1016/s0377-2217(97)86747-1.

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Davies, Simon. "Mathematical models for Arctic submarine pipeline protection." Marine Pollution Bulletin 17, no. 3 (March 1986): 85–86. http://dx.doi.org/10.1016/0025-326x(86)90396-6.

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Pop, Viorel. "Mathematical Models Issues of Environmental Management." Studia Universitatis „Vasile Goldis” Arad – Economics Series 25, no. 1 (May 1, 2015): 60–73. http://dx.doi.org/10.1515/sues-2015-0005.

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Abstract Today the world is facing, more and more, different sources of pollution, the most affected areas being the proximity of big industrial centers (e.g.: chemistry, mining and metallurgy, machinery building etc.). Baia Mare industrial area is a typical one for such a situation. To maintain a clean and healthy environment in Baia Mare city and in the surrounding areas, important costs are needed. The usefulness of the mathematical models consists in the possibility of mathematical processing of industrial parameters evolutions, with relevant interpretations on various influences and their correction for achieving the set goals (maximizing financial efficiency, environmental protection with the compliance of legal requirements etc.)
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Дисертації з теми "Estuarine pollution Mathematical models"

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Jiang, Dongxiang. "The application of Kriging technique to mathematical modelling of estuarine water quality." Thesis, University of Newcastle Upon Tyne, 1989. http://hdl.handle.net/10443/530.

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It is essential that estuarine modelling and surveying are carried out simultaneously because not only does the latter provide data required by the former but also the former is verified with data from the latter. This study integrates both research subjects from the panoramic point of view, aiming at improving modelling accuracy and reliability and increasing survey efficiency. Partially stratified estuaries are the most difficult types of estuaries to be modelled, in particular, the velocity field in such an estuary. A review of two commonly used methods to determine the velocity field, i. e., theoretical method and empirical method, revealed their inadequacies in real applications. Thus, a new approach using Kriging technique was originated and was tested on a finite element model of water quality. The model was formulated using a Galerkinfinite element method and was programmed in Fortran. Comparison between the simulation results and the field measurements for a salinity intrusion showed a high simulation accuracy. It is believed that the model in combination with the new approach would be a useful tool for estuarine modelling. The generalized Kriging method ensured that the new approach would be appropriate in practice. It was also applied to the investigation of sampling stations in the partially mixed estuary of the River Tees. It is essential to know how many sampling stations should be used and how they should be positioned. Two procedures were designed for solving the survey problems. They were the procedure of overall variance and the procedure of re-estimation. These procedures were capable of quantifing the relative significance of each sampling station and detecting redundant sampling stations. The 1975 survey was investigated, and useful conclusions were obtained.
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2

蔡景華 and King-wah Choi. "Finite difference modelling of estuarine hydrodynamics." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1985. http://hub.hku.hk/bib/B30425153.

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3

Fielden, Thomas Robert. "Modeling Market and Regulatory Mechanisms for Pollution Abatement with Sharp and Random Variables." PDXScholar, 2011. https://pdxscholar.library.pdx.edu/open_access_etds/282.

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This dissertation is motivated by the problem of uncertainty and sensitivity in business- class models such as the carbon emission abatement policy model featured in this work. Uncertain model inputs are represented by numerical random variables and a computational methodology is developed to numerically compute business-class models as if sharp inputs were given. A new description for correlation of random variables is presented that arises spontaneously within a numerical model. Methods of numerically computing correlated random variables are implemented in software and represented. The major contribution of this work is a methodology for the numerical computation of models under uncertainty that expresses no preference for unlikelihood of model input combinations. The methodology presented here serves a sharp contrast to traditional Monte Carlo methods that implicitly equate likelihood of model input values with importance of results. The new methodology herein shifts the computational burden from likelihood of inputs to resolution of input space.
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4

Chung, Nga-hang, and 鍾雅行. "Large-eddy simulation of transport of inert and chemically reactive pollutants over 2D idealized street canyons." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2011. http://hub.hku.hk/bib/B47849903.

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In view of the worsening air quality in the world, more concerns are focused on the environment. This thesis uses the technique of CFD and develops the computer model to investigate the wind and pollutant transport, as well as the chemistry of reactive pollutants in idealized two-dimensional (2D) street canyons. Three scientific questions are raised in this thesis. The first task is to find out the po- sition with the most favorable pollutant removal along the ground level over 2D idealized street canyon of different building-height-to-street-width (aspect) ratios (ARs). The di- mensionless parameter, C, represents the pollutant removal performance. In the isolated roughness regime, the two local maximum C locate at the reattachment point and the windward corner. In the wake interference regime, C is peaked on the windward side. The number of vertically aligned recirculations depends on the street depth in the skimming flow regime. The sizes of the secondary recirculation upstream and downstream deter- mine how the maximum C shifts from the street centre. After identifying the position of peaked pollutant removal rate at the ground level, the emission source should be placed with the highest constant C in order to remove the pollutants upward more quickly to safeguard the street-level air quality. After understanding the best pollutant removal in the street canyon of different ARs, the second task is to find out what AR is the most favorable for the ventilation and pollutant removal across the roof level. The three parameters, namely friction factor, air exchange rate (ACH) and pollutant exchange rate (PCH), are introduced to quantify the pressure difference to sustain the mean flow, the ventilation and pollutant removal, respectively. The turbulence contributes more than 70% to the total ACH and PCH in all the three flow regimes. By increasing the atmospheric turbulence in building geometry as well as the surface roughness, the ventilation and pollutant removal performance can be improved. The linear relation between the friction factor and ACH demonstrates the larger resistance that in turn promotes the air exchange over the roof level. The physical dispersion is studied; however atmospheric pollutants are seldom in- ert but chemically reactive instead. The last task is to include the three common air pollutants, NO, NO2 and O3, in the simple NOx ?O3 mechanism in terms of the photo- stationary state and reaction rates. The Damkohler numbers of NO and O3, DaNO and DaO3, are parameterized by the concentrations of the sources NO and O3. The normalized mean and fluctuation NO, NO2 and O3 are separately considered. The integrated pho- tostationary state (PSS) in the first canyon increases with DaO3 under the same DaNO. The integrated PSS of the second to the twelveth street canyons are compared with each case, the monotonic increase in the PSS from the second to twelveth canyon is perceived in DaNO/DaO3 1, 0.03, 0.02, 0.001 and 0.000333. Further decreases the DaNO/DaO3 to 0.000143, 0.000125, 0.000118, 0.000111 and 0.0001, the PSS is found to be non-linear and the trough appears in the fourth and fifth canyons.
published_or_final_version
Mechanical Engineering
Master
Master of Philosophy
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5

夏激揚 and Jiyang Xia. "Numerical study on wind field and air pollutant dispersion in urban street canopies." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2000. http://hub.hku.hk/bib/B31242509.

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6

Leung, Ka-kit Pieta, and 梁家杰. "On the study of ventilation and pollutant removal over idealized two-dimensional urban street canyons." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2012. http://hub.hku.hk/bib/B48521863.

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In the last century, there has been a rapid growth and development in economy and modern technology around the world. This phenomenon helped improving wealth and living standard but also brought pollutions to the society and the environment. Among various kinds of pollution, air pollution takes a larger proportion. Therefore, there is increasing concern about the ventilation and pollution removal behavior in the urban environment. Among different academic studies performed, the use of computational fluid dynamics (CFD) had become more popular. Since wind tunnel experiments serve as validations for CFD results, this thesis developed the technique required for wind tunnels experiments and to investigate the pollutant removal related to urban geometry, as well as the technique for gas sampling to examine the distribution of pollutants in urban boundary layer over idealized two-dimensional (2D) street canyons. Three specific tasks are archived to accomplish the above objectives. The first task was to extend the wind tunnel in the Department of Mechanical Engineering, the University of Hong Kong. An extension duct was designed to increase the length of the test section in which the reduced-scale model could be installed. The dimensions of the test section were specified according to the required length for fully developed flow inside the test section, the environment in the laboratory and the original wind tunnel conditions. The extension duct was then constructed and mounted, with the wind profile inside the test section obtained afterwards. After construction of the extended test section for experimental purposes, the second task was to examine the pollutant transport behaviors from the ground level of idealized 2D urban street canyons to the urban atmospheric boundary layer (ABL) using both laboratory wind tunnel measurements and CFD. Movable rectangular aluminum blocks were placed in the wind tunnel in cross-flow to construct street canyons of different building-height-to-street-width (aspect) ratios. Wetted filter papers were applied on the surface of the blocks inside the street region, modeling the source of pollutant emission inside the street canyons. The wind tunnel and CFD results complemented each other to elucidate the pollutant removal mechanism that is in line with other results available in literature. From the experimental results obtained, scaling effect was observed in the mass transfer behaviors even the flows had fulfilled kinematic similarity. A new indicator, the scaled overall pollutant removal coefficient, was formulated for the comparison of pollutant removal performance. The improved agreement in the comparison with the CFD results showed that the scaled overall pollutant removal coefficient could be used to account for the scaling effects occurred in laboratory experiments at finite Reynolds number (〖10〗^(3 ) to 〖10〗^(5 ) in this study) for comparison of pollutant removal performance. The behavior of pollutants inside the street canyons was studied; however, the pollutant concentration inside a street could be affected by the pollutant source in another street, even there were several streets away from it. The pollutant escaped from the source street could act as air entrainment into other streets, affecting the air quality. The concentration profile correlated to the street geometry was thus studied. The last task of this dissertation was to study the effect of urban geometry on the concentration profile of the urban ABL by means of gas dispersion experiments. Experiments were carried out in the wind tunnels of the Department of Mechanical Engineering and Department of Civil Engineering with different sets of experimental models used. A special gas emission source was constructed in order to simulate the linear source due to busy traffic in the street regions. The required gas sampling techniques were also studied throughout the measurement. Trial experiments were carried out and preliminary results had been obtained. Furthermore, the pollutant concentration profiles downstream from a linear pollutant source in an idealized 2D street canyon were also measured. Throughout the experiments, different designs of line source were tested and factors affecting the experimental results were considered. One of the line source designs was adopted and the pollutant concentrations in street canyons of different aspect ratios were observed. The concentration decreases rapidly with increasing distance from the roof but then increases to steady value. The average pollutant concentration over the concentration profile was different at different aspect ratios. It is believed that its performance depends on the pollutant removal behavior from street regions.
published_or_final_version
Mechanical Engineering
Master
Master of Philosophy
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7

Wong, Ching-chi, and 黃精治. "Flow and pollutant dispersion over idealized urban street canyons using large-eddy simulation." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2013. http://hdl.handle.net/10722/206698.

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Flows and pollutant dispersion over flat rural terrain have been investigated for decades. However, our understanding of their behaviours over urban areas is rather limited. Most cases have either focused on street level or in the roughness sub-layer (RSL) of urban boundary layer (UBL). Whereas, only a handful of studies have looked into the coupling between street-level and UBL-core dynamics, and their effects on pollutant dispersion. In this thesis, computational fluid dynamics (CFD) is employed to examine the flows and pollutant transport in and over urban roughness. Idealised two-dimensional (2D) street canyons are used as the basic units fabricating hypothetical urban surfaces. A ground-level passive and chemically inert pollutant source is applied to simulate the flows and pollutant dispersion over rough surfaces in isothermal condition. Large-eddy simulation (LES) with the one-equation subgrid-scale model is used to solve explicitly the broad range of scales in turbulent flows. Arrays of idealized street canyons of both uniform and non-uniform building height are used to formulate a unified theory for the flows and pollutant dispersion over urban areas of different morphology. The geometry of roughness elements is controlled by the building-height-to-street-width (aspect) ratio (0.083 ≤ AR ≤ 2) and/or the building height variability (BHV = 0.2, 0.4 and 0.6), in which the characteristic regimes of skimming flow, wake-interference and isolated roughness are covered. A detailed analysis on the roof-level turbulence structure reveals parcels of low-speed air masses in the streamwise flows and narrow high-speed down-drafts in the urban canopy layer, signifying the momentum entrainment into the street canyons. The decelerating streamwise flows in turn initiate up-drafts carrying pollutants away from the street canyons, illustrating the basic pollutant removal mechanism in 2D street canyons. Turbulent transport processes, in the form of ejection and sweep, are the key events governing the exchanges of air and pollutant of street canyon. Air exchange rate (ACH) along the roof level is dominated by turbulent transport, in particular over narrow street canyons. The LES results show that both the turbulence level and ACH increase with increasing aerodynamic resistance defined in term of the Fanning friction factor. At the same AR, BHV greatly increases the friction factor and the ACH in dense built areas (AR ≤ 0.25). The turbulence intensity is peaked on the windward side of street canyons that does not overlap with the maximum velocity gradient near the leeward building corners, suggesting the importance of background turbulence in street-level ventilation. Over the building roughness, pollutant plume dispersion after the ground-level area source in cross flows resumes the self-similar Gaussian shape in the vertical direction in which the vertical plume coverage is proportional to the square root of downwind distance in the streamwise direction. Moreover, the vertical dispersion coefficient is proportional to the one-fourth power of friction factor over idealised street canyons. Conclusively, friction factor can be used to parametrise ventilation and pollutant dispersion over urban areas.
published_or_final_version
Mechanical Engineering
Doctoral
Doctor of Philosophy
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Yang, Jing Yi. "An improved algorithm for data filtering based on variation for short term air pollution prediction in Macau." Thesis, University of Macau, 2012. http://umaclib3.umac.mo/record=b2592957.

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Ahmad, Faheem. "Numerical modelling of transport of pollutant through soils." Thesis, This resource online, 1991. http://scholar.lib.vt.edu/theses/available/etd-08182009-040239/.

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10

Li, Xianxiang, and 李顯祥. "Large-eddy simulation of wind flow and air pollutant transport inside urban street canyons of different aspect ratios." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2008. http://hub.hku.hk/bib/B40687326.

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Книги з теми "Estuarine pollution Mathematical models"

1

Coastal and estuarine processes. New Jersey: World Scientific, 2009.

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2

Aubrey, David G. Kings Bay / Cumberland Sound, Georgia. Part II: Numerical modeling. Woods Hole, Mass: Woods Hole Oceanographic Institution, 1987.

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Aubrey, David G. Kings Bay / Cumberland Sound, Georgia. Part II: Numerical modeling. Woods Hole, Mass: Woods Hole Oceanographic Institution, 1987.

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4

Hess, Kurt W. Assessment model for estuarine circulation and salinity. Washington, DC: U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, National Environmental Satellite, Data, and Information Service, 1985.

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5

Estuaries: Monitoring and modeling the physical system. Malden, MA: Blackwell Pub., 2007.

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6

L, Spaulding Malcolm, and American Society of Civil Engineers. Coastal Zone Management Committee., eds. Estuarine and coastal modeling: Proceedings of the conference. New York, N.Y: American Society of Civil Engineers, 1990.

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7

Shirvaikar, V. V. Air pollution meteorology. Mumbai: Bhabha Atomic Research Centre, 2002.

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8

Mathematical modeling of groundwater pollution: With 104 illustrations. New York: Springer, 1996.

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9

Matsutō, Toshihiko. Kankyō mondai ni torikumu tame no idō genshō, busshitsu shūshi nyūmon: Genshō no teishikika, moderu-ka, dēta kaiseki no kiso. Tōkyō-to Chiyoda-ku: Maruzen Shuppan, 2014.

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10

Matsunashi, Junzaburō. Kankyō ryūtai osen. Tōkyō-to Chiyoda-ku: Morikita Shuppan, 2012.

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Частини книг з теми "Estuarine pollution Mathematical models"

1

Sun, Ne-Zheng. "Mathematical Models of Groundwater Quality." In Mathematical Modeling of Groundwater Pollution, 187–246. New York, NY: Springer New York, 1996. http://dx.doi.org/10.1007/978-1-4757-2558-2_7.

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Kovarik, Karel. "Mathematical Models of Groundwater Flow." In Numerical Models in Groundwater Pollution, 61–108. Berlin, Heidelberg: Springer Berlin Heidelberg, 2000. http://dx.doi.org/10.1007/978-3-642-56982-1_5.

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Sun, Ne-Zheng. "Applications of Groundwater Quality Models." In Mathematical Modeling of Groundwater Pollution, 247–94. New York, NY: Springer New York, 1996. http://dx.doi.org/10.1007/978-1-4757-2558-2_8.

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4

Hritonenko, Natali, and Yuri Yatsenko. "Models of Air Pollution Propagation." In Mathematical Modeling in Economics, Ecology and the Environment, 179–96. Boston, MA: Springer US, 2013. http://dx.doi.org/10.1007/978-1-4614-9311-2_8.

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Hritonenko, Natali, and Yuri Yatsenko. "Models of Water Pollution Propagation." In Mathematical Modeling in Economics, Ecology and the Environment, 197–217. Boston, MA: Springer US, 2013. http://dx.doi.org/10.1007/978-1-4614-9311-2_9.

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Kovarik, Karel. "Mathematical Models of Transport of Miscible Pollutants." In Numerical Models in Groundwater Pollution, 109–24. Berlin, Heidelberg: Springer Berlin Heidelberg, 2000. http://dx.doi.org/10.1007/978-3-642-56982-1_6.

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7

Piver, W. T., and F. T. Lindstrom. "Mathematical Models for Describing Transport in the Unsaturated Zone of Soils." In Water Pollution, 125–259. Berlin, Heidelberg: Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-540-46685-7_4.

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8

Communar, G. "Mathematical Models of Contaminant Transport in Stratified Media." In Advances in Groundwater Pollution Control and Remediation, 233–47. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-0205-3_12.

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9

Zlatev, Zahari. "Mathematical Models for Studying the Long-Range Transport of Air Pollutants." In Computer Treatment of Large Air Pollution Models, 21–67. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-011-0311-4_2.

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10

Bermúdez, Alfredo. "Mathematical modelling and optimal control methods in water pollution." In The Mathematics of Models for Climatology and Environment, 3–37. Berlin, Heidelberg: Springer Berlin Heidelberg, 1997. http://dx.doi.org/10.1007/978-3-642-60603-8_1.

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Тези доповідей конференцій з теми "Estuarine pollution Mathematical models"

1

Deva K. Borah. "Watershed Scale Nonpoint Source Pollution Models: Mathematical Bases." In 2002 Chicago, IL July 28-31, 2002. St. Joseph, MI: American Society of Agricultural and Biological Engineers, 2002. http://dx.doi.org/10.13031/2013.10398.

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Zappalà, G., S. Bonamano, A. Madonia, G. Caruso, and M. Marcelli. "Microbiological risk assessment in a coastal marine environment through the use of mathematical models." In WATER POLLUTION 2012. Southampton, UK: WIT Press, 2012. http://dx.doi.org/10.2495/wp120011.

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3

Guarnaccia, Claudio, Julia Griselda Ceron Breton, Rosa Maria Ceron Breton, Carmine Tepedino, Joseph Quartieri, and Nikos E. Mastorakis. "ARIMA models application to air pollution data in Monterrey, Mexico." In MATHEMATICAL METHODS AND COMPUTATIONAL TECHNIQUES IN SCIENCE AND ENGINEERING II. Author(s), 2018. http://dx.doi.org/10.1063/1.5045447.

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Kachiashvili, Kartlos, David Gordeziani, and David Melikdzhanian. "Mathematical Models of Pollutants Transport with Allowance for Many Affecting Pollution Sources." In Specialty Symposium on Urban Drainage Modeling at the World Water and Environmental Resources Congress 2001. Reston, VA: American Society of Civil Engineers, 2001. http://dx.doi.org/10.1061/40583(275)65.

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5

Marinov, A. M., and T. Petrovici. "Mathematical models for irrigation and nutrient management practices to improve nitrate pollution control." In WATER RESOURCES MANAGEMENT 2009. Southampton, UK: WIT Press, 2009. http://dx.doi.org/10.2495/wrm090181.

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Slepchuk, Kira, Kira Slepchuk, Tatyana Khmara, and Tatyana Khmara. "AVAILABILITY OF NUMERICAL MATHEMATICAL MODELS TO SOLVE THE APPLIED PROBLEMS OF WATER QUALITY MANAGEMENT OF SHELF ECOSYSTEMS." In Managing risks to coastal regions and communities in a changing world. Academus Publishing, 2017. http://dx.doi.org/10.31519/conferencearticle_5b1b93b74031e6.93146133.

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Анотація:
The problems appeared during development and calibration of one-dimensional (vertical resolution) biogeochemical block of water quality model, are discussed. It is extremely useful in the initial stage of shelf ecosystems research because of its simplicity in as implementation as result interpretation. To describe the environmental parameters dynamics we used the Model for Estuarine and Coastal Circulation Assessment, which consists of hydrodynamic model; model of conservative impurity transport; chemical and biological model. The seasonal of biogenic elements and phytoplankton variability in the Sevastopol Bay is studied as an example.
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Slepchuk, Kira, Kira Slepchuk, Tatyana Khmara, and Tatyana Khmara. "AVAILABILITY OF NUMERICAL MATHEMATICAL MODELS TO SOLVE THE APPLIED PROBLEMS OF WATER QUALITY MANAGEMENT OF SHELF ECOSYSTEMS." In Managing risks to coastal regions and communities in a changing world. Academus Publishing, 2017. http://dx.doi.org/10.21610/conferencearticle_58b43172900b2.

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Анотація:
The problems appeared during development and calibration of one-dimensional (vertical resolution) biogeochemical block of water quality model, are discussed. It is extremely useful in the initial stage of shelf ecosystems research because of its simplicity in as implementation as result interpretation. To describe the environmental parameters dynamics we used the Model for Estuarine and Coastal Circulation Assessment, which consists of hydrodynamic model; model of conservative impurity transport; chemical and biological model. The seasonal of biogenic elements and phytoplankton variability in the Sevastopol Bay is studied as an example.
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8

Afshari, Hamid, Romain Farel, Jean-Paul Gourlia, and Qingjin Peng. "Energy Symbioses in Eco-Industrial Parks: Models and Perspectives." In ASME 2016 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/detc2016-59965.

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Design and implementation of Eco-Industrial Parks (EIPs) is a practical and scientific solution to achieve sustainable industries. Specifically, energy exchange networks can significantly contribute to the pollution reduction by recovering and sharing wasted heat generated in industrial processes. Despite this perceived fact, the existing research seems mainly looking for one to one relation and lacks in methods for modeling and optimizing multi-synergy symbioses that is essential for EIPs. This paper reviews main concepts in designing industrial symbioses and proposes an optimization model to exchange the residual energy between individual industries in an EIP. Using mathematical programming, the model decides the best set of connections between energy suppliers and users to minimize the total cost and maximize energy symbioses. The presented models analyze perspectives to potential symbioses for individual industries and EIP managers. A detailed discussion clarifies how these perspectives can affect the optimized symbioses. The model is validated using anonymized data of a real case. The result shows that various perspectives to the model provide different energy network topographies.
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Ryzhkova, А. V., and N. A. Zhilnikova. "METHODS FOR ECO-EFFICIENCY ASSESSMENT OF ORGANIZATIONS." In MODELING AND SITUATIONAL MANAGEMENT THE QUALITY OF COMPLEX SYSTEMS. Saint Petersburg State University of Aerospace Instrumentation, 2021. http://dx.doi.org/10.31799/978-5-8088-1558-2-2021-2-150-156.

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This article discusses the modern concept of eco-efficiency, based on the methods of using resources for the development of an organization in terms of economic and environmental indicators through more efficient use of resources and reducing pollution. Its differences from the traditional principles of environmental efficiency are determined. Mathematical models for assessing the eco-efficiency of industrial production are proposed. The applicability of the developments is shown on the example of a microelectronics enterprise. The presented models make it possible to measure the eco-efficiency indicator, taking into account the use of all eco-parameters affecting the change in the efficient use of resources and reducing the level of pollution.
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Shulga, Tatiana, Tatiana Shulga, Leonid Cherkesov, and Leonid Cherkesov. "SIMULATION AND EARLY WARNING OF NATURAL AND TECHNOGENIC INFLUENCES IN COASTAL AREAS IN THE SEA OF AZOV." In Managing risks to coastal regions and communities in a changing world. Academus Publishing, 2017. http://dx.doi.org/10.31519/conferencearticle_5b1b94643fa156.27980245.

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In this work, the waves and currents generated by prognostic wind in the Sea of Azov are investigated using a three-dimensional nonlinear sigma-coordinate model. The mathematical model was also used for studying the transformation of passive admixture in the Sea of Azov, caused by the spatiotemporal variations in the fields of wind and atmospheric pressure, obtained from the prediction SKIRON model. Comparison of the results of numerical calculations and the data of field observations, obtained during the action of the wind on a number of hydrological stations was carried out. The evolutions of storm surges, velocities of currents and the characteristics of the pollution region at different levels of intensity of prognostic wind and stationary currents were found. The results of a comprehensive study allow reliably estimate modern ecological condition of offshore zones, develop predictive models of catastrophic water events and make science-based solutions to minimize the possible damage.
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