Environmental Science
Z. Mohebi; H. Mirzaei
Abstract
BACKGROUND AND OBJECTIVES: Assessment of biodiversity is a key factor in understanding of function and ecosystem management. Nevertheless, an operating procedure for assessing biodiversity and spatial pattern has not been established yet. Therefore, this empirical study was conducted to explore the role ...
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BACKGROUND AND OBJECTIVES: Assessment of biodiversity is a key factor in understanding of function and ecosystem management. Nevertheless, an operating procedure for assessing biodiversity and spatial pattern has not been established yet. Therefore, this empirical study was conducted to explore the role of diversity of species in the spatial patterning of tow shrub herbaceous communities. METHODS: First, the biodiversity analysis was performed by Past3 software to compare the relationship between the two communities. Secondly, the distance and quadrat indices were employed to explore the spatial relationship of dominant species with diversity. In this regard, 64 and 84 plant species recorded in two vegetation types were investigated. Distribution patterns were extracted by distance and quadrat indices and Ecological Methodology software.FINDINGS: The results showed that vegetation type 2 had more diversity and richness compared to vegetation type 1. Besides, the spatial distributions of dominant species (Astragalus gossipinus and Bromus tomentellus) in the two vegetation types were clumped and random with tendency to be clumped. The Scrophulariaceae, Malvaceae, Papaveraceae, and Euphorbiaceae families were not found in vegetation Type 1, and vegetation Type 2 had no species of the Boraginaceae, Rosaceae, Thumeliaceae, Capparidaceae, Oleaceae, Sistaceae, and Dispaceae families. The results showed significant differences in the number of Gaminae and Legominosea families between the two vegetation types. CONCLUSION: It was concluded that in communities with a dominant cover of shrub, the distribution pattern was clumped, and quadrat indices were less efficient than distance indices. While, in high-diversity communities with a predominant cover of gross, spatial distribution was random and distance and quadrat indices were more convergent.
Environmental Engineering
P. Gholamiderami; P. Lahooti; H. Darbam
Abstract
The aim of this study was to produce mulch by combining natural mineral and organic substances in order to reach soil stabilization and improve soil physical and mechanical properties in Koopal area. The effects of organic mulch (at 3 levels of O1: combination of 1% sugarcane bagasse biochar+0.5% gum ...
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The aim of this study was to produce mulch by combining natural mineral and organic substances in order to reach soil stabilization and improve soil physical and mechanical properties in Koopal area. The effects of organic mulch (at 3 levels of O1: combination of 1% sugarcane bagasse biochar+0.5% gum Arabic+0.5% gelatin; O2: combination of 3% sugarcane bagasse biochar+1% gum Arabic+1% gelatin; and O3: combination of 5% sugarcane bagasse biochar+1.5% gum Arabic+ 1.5% gelatin) and MNF organomineral mulch (at 3 levels of MNF1: 1%; MNF2: 3%; and MNF3: 5%) on soil were investigated. The soil samples were incubated for 2 and 4 months and finally placed in a wind tunnel. Some physical and chemical properties of soil were obtained as pH=7.42, O.M%=0.223, and soil texture of silty loam. The obtained results showed that compared to control, application of the mulches increased soil organic carbon percentage (1.1%), mean weight diameter (2.47 mm), geometric mean diameter (1.27 mm), penetration resistance (370), shear strength (27.38) and tensile strength (0.8) significantly and decreased soil loss (0.10 g/m2/s), fracture index, soil texture index (62.16), and crust index (1.18) significantly (p <0.01) in both incubation periods. Effects of the mulches on soil organic carbon were reduced after 4 months. In mulch treatments, soil loss rate, mean weight diameter, geometric mean diameter and tensile strength were increased significantly. In general, the organic mulch could stabilize the soil and improve the physical and mechanical properties of the soil.
S. Kozlovskyi; L. Nikolenko; O. Peresada; O. Pokhyliuk; O. Yatchuk; N. Bolgarova; O. Kulhanik
Abstract
In the context of globalization of economic development processes, the issue of determining the level of public welfare of economic agents is particularly burning. The object of ehis study is the process of assessing welfare of the economic entities system. The subject of the study is the instrumental ...
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In the context of globalization of economic development processes, the issue of determining the level of public welfare of economic agents is particularly burning. The object of ehis study is the process of assessing welfare of the economic entities system. The subject of the study is the instrumental and mathematical aspects of modeling and measuring the public welfare. The aim of the work is to develop the mathematical model for measuring the welfare of Ukraine using methods of intellectual analysis, namely, the theory of fuzzy sets. The output of the study is a new approach to objective estimation of public welfare of the state. It is proposed to assess the level of public welfare of the state on the basis of a mathematical model developed on the basis of the theory of fuzzy sets. Input factors of the model are international indices and indicators, such as Index of Economic Freedom, Global Peace Index, Democracy Index, Corruption Perceptions Index, Human Development Index, Prosperity Index, Global Competitiveness Index as well as an indicator that reflects the characteristic property of the Ukrainian economy, namely the minimum living wage. Developed mathematical model for assessment of the level of public welfare of Ukraine and made a prediction of the indicator by 2024 on the basis of the above indices. The results of the study allowed us to establish that the level of public welfare (units) in Ukraine on a scale from 0 to 100 will be equal to 25, 17, 32, 26, and 28 in 2020, 2021, 2022, 2023, and 2024, accordingly.
N. Barforoush; A. Etebarian; A.R. Naghsh; A. Shahin
Abstract
A carbon-based industry, such as oil refinery, needs to change its business model to achieve a green business. Considering the existing too much data, the modeling procedure is complex. Therefore, combination of the Fuzzy Delphi method and System Dynamics can be considered to cover this complexity. The ...
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A carbon-based industry, such as oil refinery, needs to change its business model to achieve a green business. Considering the existing too much data, the modeling procedure is complex. Therefore, combination of the Fuzzy Delphi method and System Dynamics can be considered to cover this complexity. The starting point in this work is literature review of prior studies on the same common topic and green business, and it relies on a Fuzzy Delphi method to define main parameters. Based on the experts’ opinions, management support (0.78), cost (0.77), knowledge management (0.73), quality (0.64), staff training and empowering (0.63) customer satisfaction (0.63), environmental plan (0.61), production and process design (0.58) as well as suppliers (0.35) are the determining parameters in modeling green oil refining industry, respectively. Application of the results of the scenarios proposed based on importance illustrates the increasing share of the green business financial resource in considerable growth (39 %) of applying the green business model by 50% chance. Financial investing in the recycling plan leads up to a positive effect (43%) by almost equal chance of 50%-100%. Investing in staff training and empowerment leads to 37.5 % growth in exploiting the green business model with 50% chance. In conclusion, the oil refining organizations must pay attention to the above-mentioned part of their business to generate income and save environmental resources.
A.B. Imran; K. Khan; N. Ali; N. Ahmad; A. Ali; K. Shah
Abstract
Forest’s ecosystem is one of the most important carbon sink of the terrestrial ecosystem. Remote sensing technology provides robust techniques to estimate biomass and solve challenges in forest resource assessment. The present study explored the potential of Sentinel-2 bands to estimate biomass ...
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Forest’s ecosystem is one of the most important carbon sink of the terrestrial ecosystem. Remote sensing technology provides robust techniques to estimate biomass and solve challenges in forest resource assessment. The present study explored the potential of Sentinel-2 bands to estimate biomass and comparatively analyzed of red-edge band based and broadband derived vegetation indices. Broadband indices include normalized difference vegetation index, modified simple ratio and atmospherically resistant VI. Whereas, red-edge band indices include two red-edge normalized difference vegetation index and sentinel-2 red-edge position. Results showed that red-edge band derived spectral indices have performed better than the Broadband indices. The coefficient of correlation for normalized difference vegetation index, modified simple ratio and atmospherically resistant-VI was 0.51, 0.44 and 0.31 respectively, On the other hand, red-edge band indices showed higher correlation of R2 0.62, 0.64 and 0.55, respectively. Similarly, in stepwise regression red-edge normalized difference vegetation index (using band 6) was selected in final model (as overall R2 of the model was 0.60) while all other indices were removed because they have non-significant relationship with the biomass. Accuracy assessment shown the red-edge index has highest R2 (0.64) and least error of (31.29 t/ha) and therefore the study concluded that narrowband indices performed better to estimate biomass and thus final model contained only red-edge index to predict biomass over the study area. The study suggests that more in-depth research should be conducted to explore further properties of red-edge indices for vegetation parameters prediction.
Z.A. Buisan; A.E. Milano; P.D. Suson; D.S. Mostrales; C.S. Taclendo; J.G. Blasco
Abstract
The study aimed to determine the impact of sound land use management to the runoff in Kabuntalan, Maguindanao in Tamontaka river basin. This was done through simulation and the comparison of the three land cover scenarios such as 2015 land cover, 2025 projected land cover and desired land use to determine ...
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The study aimed to determine the impact of sound land use management to the runoff in Kabuntalan, Maguindanao in Tamontaka river basin. This was done through simulation and the comparison of the three land cover scenarios such as 2015 land cover, 2025 projected land cover and desired land use to determine its difference in terms of runoff. Hydrologic Engineering Center-Hydrologic Modeling System was used for simulating runoff. The geographic Information system was used for the preparation of the land use/cover and as an interface between GIS and HEC-HMS. Based on the result, 2025 land cover values in runoff volume and peak outflow increase from 2015 land cover while decrease in desired land use. There is shorter time to peak in 2025 land cover than desired land use. The 2025 land cover, represented the land cover without intervention, showed that agriculture will dominate the area with 78.28% of the total area, closed canopy forest and open forest cover will reduce with 4.57% and 6.78% of the total area respectively. The desired land use represented the sound land use management, showed that there will be 13.9% decreased in agriculture. This can, however, result to increase in close canopy forest (112.3%), grassland (125.7%), and open forest (4.3%). The study showed that desired land use will most likely reduce the magnitude of the flood than the 2015 and 2025 land covers. Thus, adopting sound land use management in Tamontaka river basin is crucial to reduce runoff and thereby mitigate flooding in the study area.
Environmental Management
V. Koziuk; O.V. Dluhopolskyi; Y. Hayda; Y. Klapkiv
Abstract
The study attempts to assess the impact of the educational level of the country’s population, the level of science and technology development on the general environmental environment. The aim of this article is to assess the impact of educational level and level of science development on individual ...
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The study attempts to assess the impact of the educational level of the country’s population, the level of science and technology development on the general environmental environment. The aim of this article is to assess the impact of educational level and level of science development on individual elements that reflect the state of the environment. To receive the obtained results is being used the package of statistical programs STATISTICA. The intense connection between educational level and aggregated evaluation of Environment Performance Index has been established. The significant correlation was found between the education index and the ecological conditions in countries with a very high, medium and low level of Human Development Index. The significant correlation between the processes of implementation of educational and science public policy and a set of environment’s criteria was found. The obtained models have been proved that for underdeveloped countries investment in education and science has a more significant impact on the ecological situation than in highly developed countries. Finally, this study concluded that public policy in the area of science and education, aimed at improving the ecological situation in the country, should be differentiated depending on the level of country development.
Environmental Management
P. Kuraś
Abstract
The study relates to the problem of cluster management in the conditions of sustainable development. Against the background of the assumptions and conditions for sustainable development, the specificity of the cluster activity in the conditions of the Polish economy has been presented. The objective ...
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The study relates to the problem of cluster management in the conditions of sustainable development. Against the background of the assumptions and conditions for sustainable development, the specificity of the cluster activity in the conditions of the Polish economy has been presented. The objective of the paper is to characterize the cluster management standards in Poland. Such standards have been formalized and published lately with the recommendation for their application by the Polish Agency for Enterprise Development. They constitute the response to the low level of the existing cluster management and lack of the system approach to the issue of the preparation of professional coordinators, whose significance is crucial for the cluster success. In the paper, the methods of literary study and the analysis of secondary data have been applied. The paper begins with the characteristics of the principles of sustainable development and their impact on cluster activity. It also indicates the role and significance of clusters in the contemporary economy. Subsequently, the author has conducted an analysis of cluster activities in Poland. The last part of the paper refers to the Polish standards for cluster management as well as the conclusions and recommendations.
Environmental Management
M. Kadłubek
Abstract
In this study, an investigation of long-term forecasts relating to the development of the transport sector in Poland is performed, including the ones by 2030 and 2050. Selected transport development forecasts from the perspective of the membership of Poland in the European Union are presented and most ...
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In this study, an investigation of long-term forecasts relating to the development of the transport sector in Poland is performed, including the ones by 2030 and 2050. Selected transport development forecasts from the perspective of the membership of Poland in the European Union are presented and most of all, from the perspective of national studies. The basement for the review was the prognosis of European Commission, Central Statistical Office, International Monetary Fund, Department of Economic, Sectoral and Agricultural Market of BGZ BNP PARIBAS S.A., Motor Transport Institute, Wise Europa Institute of Warsaw Transport Institute, as well as prognosis of the scientific experts. Despite temporary economic downturns, the demand for freight transport is steadily growing and, as shown by the forecasts, it will grow in the future. In 2018 the situation on the freight transport market was expected to remain stable, mainly due to the continuous high demand for international carriages.
Environmental Management
D. Wielgórka; W. Szczepaniak
Abstract
Eco-innovation is any innovation that leads to sustainable development by limiting the negative impact of production activities on the environment, increasing the resilience of nature to loads or ensuring greater efficiency and responsibility in the use of natural resources. Eco-innovations are the opportunity ...
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Eco-innovation is any innovation that leads to sustainable development by limiting the negative impact of production activities on the environment, increasing the resilience of nature to loads or ensuring greater efficiency and responsibility in the use of natural resources. Eco-innovations are the opportunity for enterprises. Their introduction contributes to reducing the costs of doing business, allows you to take advantage of new opportunities development and positively affects the company's image. The main goal of the research is to recognize the situation and the level of eco-innovation in Poland, including the micro, small and medium enterprises sector and to compare the obtained results with the ones from European Union countries. The result of the research is indicating the barriers and opportunities to support the development of eco-innovation in the micro, small and medium enterprises sector in Poland. Lack of financial resources for eco-innovation was indicated as the largest barrier by MSMEs in Poland. The most significant barriers to eco-innovation in Poland are mainly of an economic nature, including the high cost of implementation, difficult access to capital, uncertain return on investment and the weak system of economic and fiscal incentives encouraging eco-innovation.
Environmental Management
A. Mesjasz-Lech
Abstract
The markets globalization is one of the factors creating conditions for the development of entrepreneurship. Entrepreneurship does not have one generally accepted definition. Most often, entrepreneurship is perceived as the ability to increase the number of enterprises. Entrepreneurship can be understood ...
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The markets globalization is one of the factors creating conditions for the development of entrepreneurship. Entrepreneurship does not have one generally accepted definition. Most often, entrepreneurship is perceived as the ability to increase the number of enterprises. Entrepreneurship can be understood as the potential to identify and use development opportunities regardless of own resources. Entrepreneurship is therefore associated with such areas as new organizational forms, stimulation of innovation and cooperation with the entrepreneurial environment. Unfortunately, enterprises face many difficulties which can have the supply and demand nature. These difficulties hinder the enterprise functioning on the market and its development. Logistics performance perceived as the implementation of the highest quality of logistics standards allows overcoming the difficulties of entrepreneurship, especially for the transport and storage sector. For this reason, the article aims to determine the relationship between logistics performance and the entrepreneurship rate for selected European Union countries. Logistics performance was determined by a synthetic measure of development estimated using numerical taxonomy methods for variables forming the Logistics Performance Index. The same method was used to build the entrepreneurship rate, accepting as variables selected entrepreneurship indicators for the transport and storage sector. The correlation analysis was performed with the use of the Spearman rank correlation coefficient. The years 2014-2016 were analyzed. The availability and completeness of data dictated the choice of years, countries and indicators for analysis.
Environmental Management
M. Voynarenko; A. Kholodenko
Abstract
In this study criterion of maximum profit intensity for transportation problems, in contrast to the known criteria of minimum expenses or minimum time for transportation, is considered. This criterion synthesizes financial and time factors and has real economic sense. According to the purpose of this ...
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In this study criterion of maximum profit intensity for transportation problems, in contrast to the known criteria of minimum expenses or minimum time for transportation, is considered. This criterion synthesizes financial and time factors and has real economic sense. According to the purpose of this paper, the algorithm of the solution of such a transportation problem is constructed. It is shown that the choice is carried out among Pareto-optimal options. Moreover, the factor of time becomes defining for the high income from transportation, and the factor of expenses – at low ones. Not absolute but relative changes of numerator and denominator become important when the criterion represents the fraction (in this case – the profit intensity as the ratio of profit to time). A nonlinear generalization of such transportation problem is proposed and the scheme of its solution in a nonlinear case is outlined. Graphic illustrations of Pareto-optimal and optimal solutions of transportation problem by profit intensity criterion are also given.
Environmental Science
M. Stępień
Abstract
The problem taken up in the study is the management of the company in terms of costs incurred on the implementation of the concept of sustainable development. The problem is important and topical in view of the possibility of increasing the efficiency of management in companies organizing their activities ...
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The problem taken up in the study is the management of the company in terms of costs incurred on the implementation of the concept of sustainable development. The problem is important and topical in view of the possibility of increasing the efficiency of management in companies organizing their activities in the perspective of sustainable development. As a consequence of the formulated research problem, the aim of the study was to recognize and assess the relationship between the currently binding provisions of the balance sheet law in Poland, in the area of costs incurred for sustainable development, and the social, economic and environmental strategy to be implemented. All the presented deliberations are divided into two main parts, theoretical and empirical. The considerations presented in part one characterize the elements of cost management in a company in the context of sustainable development. The second part is a presentation of the results of empirical research on the determinants of sustainable development cost management in a manufacturing company. The study contributes to the discussion on the identification, allocation, and presentation of costs related to the implementation of the sustainable development strategy in the company. Conclusions from the conducted research suggest the necessity of separating analytical tools in the accounting structure of the company in order to identify and allocate costs related to the construction of the sustainable development strategy. This makes it possible to assess the extent to which the company's sustainability concept has been achieved. The research methods used to achieve the objective are literature studies, descriptive analysis, and case studies.
Environmental Management
V. Babenko; I. Perevozova; O. Mandych; T. Kvyatko; O. Maliy; I. Mykolenko
Abstract
The level of information today is decisive in the socio-economic development of the country. The purpose of the article is to identify the most influential factors in the process of developing informatization in the context of international globalization. The assessment of factors influencing world information ...
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The level of information today is decisive in the socio-economic development of the country. The purpose of the article is to identify the most influential factors in the process of developing informatization in the context of international globalization. The assessment of factors influencing world information is based on the following stages: forming incoming information about the state of world information, a methodical approach to assessing the impact of world information, modeling the interrelation of components, the influence of world information as hidden factors in the development of information. Factor and correlation analyses are carried out within each cluster with a single level of information by groups of countries. Based on the calculation of factor loads, the most influential indicators have been determined, which serve as the basis for the formation of the informatization process mechanism in the countries of each cluster group. Accordingly, for example, from Innovations and Improvement Factors the major ones were only for the second cluster: Government efficiency and Efficiency of goods market and for the third cluster was the Global Competitiveness Index. The study allowed to determine the main priorities for the development of information in the context of clusters, formed in accordance with the level of information development in the country of each group. Interpretation of the results allowed determining the most influential factors in the development of informatization of the countries of each group, which is the basis for forming recommendations on organizational measures to increase the level of informatization in the context of international globalization.
Environmental Management
P. Tomski; E. Wysłocka
Abstract
The way of perceiving the environment is the factor informing on the condition of the environment and its impact on the operation of enterprises whereas the impact on the operation is the factor determining how enterprises operate in realities where there is no place for atomized actions of isolated ...
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The way of perceiving the environment is the factor informing on the condition of the environment and its impact on the operation of enterprises whereas the impact on the operation is the factor determining how enterprises operate in realities where there is no place for atomized actions of isolated enterprises and the impact of the environment and relationships with its constituents and all forms of inter-organizational and interpersonal relationships are of increasingly critical importance. The objective of the study is to analyze the perception of the environment in which modern small enterprises operate. The study question relating to this problem was formulated as follows: 1) what is the perception of the environment by the entrepreneurs representing small enterprises? 2) Is the environment of small enterprises perceived as unfriendly (dynamically changing, hostile, heterogeneous) by them? The research tool was the questionnaire. The statistical analyses were conducted using the R Package. While summing up the results of the conducted research, it should be concluded that, in most studies in the field of management of modern enterprises, a frequent observation is defining the environment as turbulent or ultrafast. The perception of the entrepreneurs under research indicates, however, a slightly different, more lenient approach to the environment. Although they were not directly asked about the level of turbulence of the environment, the obtained results, maintaining the characteristics of the environment in the middle of the scales (dynamism, hostility, heterogeneity) indicate that this environment is not perceived in a drastic and pessimistic manner.
Environmental Management
K. Trostianska; I. Semencha; M. Yerina
Abstract
The local community is a complex socio-economic system, and its ability to function for an indefinitely long period of time (viability) is not investigated sufficiently today. The purpose of the research was, using the cognitive mapping, propose to the local community management developing their own ...
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The local community is a complex socio-economic system, and its ability to function for an indefinitely long period of time (viability) is not investigated sufficiently today. The purpose of the research was, using the cognitive mapping, propose to the local community management developing their own management strategies to ensure its viability. Considering the weakly structured subject area of resource management for the viability of the local community and the complex dynamic nature of socio-economic processes, fuzzy cognitive reflection was suggested as a tool that provides opportunities for modeling the inherent complexity and uncertainty associated with socio-economic systems. This research shows a system of relations between concepts in the form of a causative network – a cognitive map of the resource management of a local community and proposes scales for measuring the concepts. During the simulation experiments, managed, indirectly managed and unmanaged resources for the viability of a local community were defined. In modeling, own income per inhabitant has been chosen as the target concept and as an indicator of the potential of an independent choice of direction for the development of the local community with the view toward the construction of resource management scenarios for the local community's viability. As a result of the simulation, there were proposed some strategies for the growth of ‘own income per inhabitant’ and some recommendations were given for building management scenarios within these strategies.
Environmental Management
N. Davidenko; H. Skrypnyk; Z. Titenko; O.V. Zhovnirenko
Abstract
The purpose of the article is the establishment of the tightness of the connection between the various sources of financing and the introduction of innovations at enterprises. In the process of research such scientific methods have been used: modeling – to determine the influence of the source ...
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The purpose of the article is the establishment of the tightness of the connection between the various sources of financing and the introduction of innovations at enterprises. In the process of research such scientific methods have been used: modeling – to determine the influence of the source of funding for innovation activities, on the number of new technological processes introduced and the introduction of new types of products; economic-statistical – to evaluate the dynamics of the amount of realized innovative products and the index of the efficiency of innovation costs; correlation-regression analysis – to determine the relationship density and the relationship between factors of influence and performance indicators; abstract-logical – for the implementation of theoretical and methodological generalizations. The results of the research – analyzed the connection of the indexes of dynamics of sources of financing of innovation activity and the amount of implemented new technological processes and development of new types of products for 2011-2017. The influence of the most significant sources of financing on the amount of innovations is described. Further development of methodological and practical aspects of the dependence of the amount of implemented innovative products and the index of the efficiency of innovation costs, using multiple regression models, has been found for the establishment of the influence of system-based economic indexes. The practical significance of the obtained results is to determine the optimal level of financial support for innovation activity of enterprises, which will allow predicting the growth of innovative processes in the country in the short and medium term.
Environmental Management
Z. Ostraszewska; A. Tylec
Abstract
Innovativeness, determining the development potential of enterprises and economies, and hence the economic welfare of societies, became an important area of interest for both theoreticians and especially economic life practitioners. Thus, in this study of the subject there can be found numerous definitions ...
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Innovativeness, determining the development potential of enterprises and economies, and hence the economic welfare of societies, became an important area of interest for both theoreticians and especially economic life practitioners. Thus, in this study of the subject there can be found numerous definitions and types of innovation, including environmental innovation, being a response to the demands of a modern economy, related to the need of combining innovativeness with care for the environment. The observed increase of interest in the idea of sustainable development, and often some kind of reorientation of enterprises towards the eco-innovative strategy, are associated with the perception of the eco-innovation as both a necessity and a chance for promotion and development. Despite this, only less than 1/3 of the countries belonging to the EU can be considered as innovative and eco-innovative at the same time. Poland still does not belong to these countries - on the map of the EU innovation Poland ranks among the so-called moderate innovators (with the SII index of 0.27 in 2017, while the EU index was 0.504). With the Eco-IS score equal to 59 the level of eco-innovativeness of the Polish economy is much below the EU average (Eco-IS = 100) – in 2017 Poland obtained 26th place out of 28 European Union countries. Given the above, this paper outlines the nature of eco-innovativeness with particular focus on the results recorded by Poland in this regard in comparison to the European Union.
Environmental Management
H. Danylchuk; N. Chebanova; N. Reznik; Y. Vitkovskyi
Abstract
The current study focuses on the problem of determining investment attrаctiveness of countries by means of monitoring regional stock markets. The method of using the permutation entropy as a model of investment attractiveness estimation is suggested. We have calculated the permutation entropy for the ...
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The current study focuses on the problem of determining investment attrаctiveness of countries by means of monitoring regional stock markets. The method of using the permutation entropy as a model of investment attractiveness estimation is suggested. We have calculated the permutation entropy for the time series of stock markets of countries for the period from 2005 to 2018. The countries with high, middle or low income in Europe, Central Asia, East Asia, the Pacific, and North America were selected for the study. The article presents the results of modeling and analysis of dynamic properties of regional stock markets using the permutation entropy. The behavior of the permutation entropy and stock markets is analyzed and conclusions about the possibility of rapid monitoring of the investment attractiveness of countries by classifying the states of the stock markets of these countries are drawn. Particular attention is paid to crisis periods. It has been shown that the permutation entropy rapidly decreases in a universal way in the pre-crisis period, which can serve as an indicator of the precursor for crisis phenomena. Determining the pre-crisis, actual crisis and post-crisis periods will allow the investor to make the right decision on time. The advantages of using the permutation entropy method as a tool for high-frequency monitoring of stock markets and modeling the investment attractiveness of countries are pointed out. The results of determining investment attractiveness in terms of the permutation entropy and ratings of the world countries, compiled by the world-wide rating agencies and literature, are compared.
J. Jiang; T. Ri; T. Pang; Y. Wang; P. Wang
Abstract
Precisely management of water quality in urban rivers is of significant and water environmental capacity provide a useful tool. This study presented a water quality analysis simulation program model-based approach for dynamical load reduction in Ashi River, highly contaminated tributaries of Songhua ...
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Precisely management of water quality in urban rivers is of significant and water environmental capacity provide a useful tool. This study presented a water quality analysis simulation program model-based approach for dynamical load reduction in Ashi River, highly contaminated tributaries of Songhua River, China. The actual and surplus dynamic environmental capacity of CODCr and NH3-N, as the two controlling endpoints, were computed based on “segment-end-control” method for monthly or seasonal management. The dynamic pollution control scheme and monthly to annual control strategies were produced based on calculated results. Results show that CODCr and NH3-N need to be cut down to approximately 462.47t/a and 5.2t/a at Zhujia-Acheng down reach and 282.42 t/a and 9.25t/a Acheng down-Chenggaozi town reach, respectively under 90% hydrological design reliability to keep the water quality at class-IV. The CODCr and NH3-N of three ditches should be strictly controlled throughout the year. Some interesting temporal-spatial characteristics of surplus environmental capacity were also found in the study. This study provides local governments with technical measurements and policy recommendations for highly contaminated water body treatment. In the future, the river water quality management in the winter season should take into particular consideration.
M. Reisi; M. Ahmadi Nadoushan; L. Aye
Abstract
Cities are experiencing rapid population growth and consequently extensive urbanization. Land-use/land-cover change is one of the important elements worldwide, which significantly affect the environment. This study aims to describe the emergence of urban heat and cool islands as a result of changes in ...
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Cities are experiencing rapid population growth and consequently extensive urbanization. Land-use/land-cover change is one of the important elements worldwide, which significantly affect the environment. This study aims to describe the emergence of urban heat and cool islands as a result of changes in land-use/land-cover. Land surface temperature over a 32-year period in Isfahan city, Iran was retrieved. The results confirmed the effect of land-use/land-cover change on Landsat land surface temperature. The average land surface temperature changed from 37.5°C in 1985 to 42.7°C in 2017 during August. The highest land surface temperature in the study area for both years occurred on bare soils (40.66°C in 1985 and 45.88°C in 2017). The second highest Landsat land surface temperature was recorded in central parts of the city with dense built-up covers (36.93°C in 1985 vs 42.45°C in 2017). The central parts of the city were found to have a lower Landsat land surface temperature compared to bare soils, which contributes to the formation of urban cool islands. As expected, water bodies and vegetation had a lower Landsat land surface temperature compared to other land covers. The results also showed changes in land use types during 1985 and 2017, with an increase in water bodies (148.82%) and built-up areas (39.67%) and a decrease in vegetation (20.08%) and bare soil (12.42%). The areas converted from vegetation to built-up experienced an increase in Landsat land surface temperature, which confirmed the effect of land-use/land-cover on microclimate.
G.A. Aliyu; N.R.B. Jamil; M.B. Adam; Z. Zulkeflee
Abstract
The analysis of changes in water quality in a monitoring network system is important because the sources of pollution vary in time and space. This study utilized analysis of the water quality index calculation, hierarchical cluster analysis, and mapping. This was achieved by assessing the water quality ...
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The analysis of changes in water quality in a monitoring network system is important because the sources of pollution vary in time and space. This study utilized analysis of the water quality index calculation, hierarchical cluster analysis, and mapping. This was achieved by assessing the water quality parameters of the samples collected from Galma River in Zaria, Northwestern Nigeria in wet and dry seasons. The Analysis shows that sampling point number 15 located downstream of the river has the largest number of water quality index of 105.77 and 126.34, while sampling points 1 located upstream of the river has 62.71 and 78.09 in both wet and dry seasons respectively. This indicates that all the monitoring sites were polluted and the water could be utilized for industrial and irrigation specified due to the purposes only. Hierarchical cluster analysis and mapping revealed consistency and variations. For both networks, cluster 1 is located in the middle of the river watershed, while clusters 2, 3 and 4 show variations within the river watershed. 3 sampling points in wet season located at the upstream of the river were specified for Irrigation and Industrial uses, while the rest of the sampling points in both seasons were specified for irrigation purpose only. From this study, water quality index and multivariate techniques for environmental management can be employed in monitoring river resources, and research of this kind can help inadequate planning and management of the river system.
S. Rashad; A.S. El-Hassanin; S.S.M. Mostafa; G.A. El-Chaghaby
Abstract
Olive milling wastewater is a major problem facing the Mediterranean countries producing olive oil like Egypt. In the present study, olive milling wastewater rich with organic phenolic compounds, macro and micro nutrients was used as growing media for cyanobacteria. The cyanobacteria were grown on wastewater ...
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Olive milling wastewater is a major problem facing the Mediterranean countries producing olive oil like Egypt. In the present study, olive milling wastewater rich with organic phenolic compounds, macro and micro nutrients was used as growing media for cyanobacteria. The cyanobacteria were grown on wastewater to obtain two biofertilizers, one bioformulated from single culture of Spirulina platensis and the second from mixed culture of S. platensis, N. muscorum and A.oryzae. The produced biofertilizers, were applied on a sandy soil to grow celery plant under different levels (25, 50 and 75%) of the recommended chemical fertilizers, while the control did not receive any fertilizers in a greenhouse experiment at Giza Research station, Agricultural Research Center, Egypt during the summer season of 2018. Results indicated that application of biofertilizers led to a significant (p<0.05) increase in the height of plant, root and stem lengths over the control group. The number of leaves per plant as well as chlorophyll content were highest in the treatments of Bio-Mix 25 and 50%. Also, these treatments increased the total macro- and micro-nutrients of celery. There was very remarkable enhancement in some recorded sandy soil properties after harvest i.e., pH, total organic matter, total nitrogen, phosphorus and potassium by the treatments of Bio-Mix with 25 and 50%. The present study concluded that 1/4 or 1/2 of the recommended dose of NPK fertilizers could be saved for celery growth by using Bio-Mix product from cyanobacteria and olive milling wastewater as a promising eco-friendly bio-organic fertilizer.
R.A.L. Amper; G.R. Puno; R.C.C. Puno
Abstract
Some riparian areas of the country are in danger of deterioration due to uncontrolled exploitation coupled with loose implementation of environmental protection policies and regulations. Muleta River, a major watershed in Bukidnon, Philippines, was assessed to determine the present condition of its riparian ...
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Some riparian areas of the country are in danger of deterioration due to uncontrolled exploitation coupled with loose implementation of environmental protection policies and regulations. Muleta River, a major watershed in Bukidnon, Philippines, was assessed to determine the present condition of its riparian habitat. Abiotic and biotic conditions of the river were assessed. Other factors including land cover, population density, and river geomorphologic characteristics contributing to the river condition were also evaluated. Results revealed that Muleta Watershed is in sub-optimal condition signifying favorable condition for floral and faunal habitat. However, considerable degradation in some isolated cases was likewise spotted. Biotic condition has shown greater degradation approaching marginal condition compared to the abiotic condition which is yet in the upper sub-optimal condition. It was found out that the midstream portion of the watershed is the most disturbed, followed by the downstream area and lastly by the upstream portion. The extent of agricultural cultivation is found as one of the significant factors affecting the health of the riparian habitat areas. It is recommended that riparian protection policies must be formulated and implemented to abate, if not prevent, the impact of anthropogenic interventions resulting to overexploitation in the riparian areas especially in midstream portion of the river.
M. Ahmadipari; H. Hoveidi; H.R. Jafari; M. Pazoki
Abstract
Environmental planning and management can have positive effects on development of some land uses including industrial areas that have a major effect on economic, social and environmental conditions. Considering the most important problems associated with modeling, the fundamental methods and functions ...
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Environmental planning and management can have positive effects on development of some land uses including industrial areas that have a major effect on economic, social and environmental conditions. Considering the most important problems associated with modeling, the fundamental methods and functions of site-selection laid inside the geographical information system are not accounted for the multi-purpose experimental programs. The main purpose of this study is to present a systematic pattern for environmental management using genetic algorithm and fuzzy analytic hierarchy process in geographical information system in order to reduce uncertainty. Through fuzzy analytic hierarchy process, the weight of criteria was calculated after extracting the criteria by Delphi technique and identifying all the effective criteria and factors involved in site selection. After preparation of intended layers, each map was prepared in the form of raster layers on geographical information system. Information layers were combined after being valued and finally the map of suitable areas was prepared. Finally, the conformity of all the obtained maps was checked out with field conditions. In this study, the genetic algorithm was used as an optimization method applied for natural selection. It was also attempted to find better solutions among others. The results showed the best site for developing industries.