Environment
A. Ghalehnovi; H. Kamelnia
Abstract
Today, the focus on the sustainability issue in universities has become of significance considering the climatic and environmental issues. Therefore, universities are moving toward uniting the sustainability methods in their systems. Currently, many universities in Iran are performing essential activities ...
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Today, the focus on the sustainability issue in universities has become of significance considering the climatic and environmental issues. Therefore, universities are moving toward uniting the sustainability methods in their systems. Currently, many universities in Iran are performing essential activities in relation to environmental issues. This study is to determine the share of universities in sustainability quantitatively, and then it analyzes their activities. This research evaluates their activities in two steps based on the clustering and the efficiency of their performance. In the first step, the universities are grouped into homogenous clusters based on hierarchical clustering method with regards to their activities in sustainability area. Following that, the Comparative Table is used to calculate the gained percentage in each index based on the mean of the scores of each group using the data of the year 2021. This is done to have a better understanding of the performance of each cluster and the universities priorities for becoming greener and more successful in green-metric system. By evaluating the productivity and the efficiency of the universities, this study represents the most sustainable universities in group one (as the highly sustainable) and group two (as moderately sustainable) which have achieved the maximum grade in energy, transportation, research and instructive areas. These results also show that environmental variables (including water management, waste and infrastructure management) need to be taken into account by universities.
S. Aghakhani; F. Haghparast; J. Gaspari
Abstract
Recent researches all across the world emphasize the threat of the increasing consumption of energy. The undeniable role of energy consumption in all stages of the life cycle of materials, including extraction, factory manufacturing, and transportation has revealed the necessity of using sustainable ...
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Recent researches all across the world emphasize the threat of the increasing consumption of energy. The undeniable role of energy consumption in all stages of the life cycle of materials, including extraction, factory manufacturing, and transportation has revealed the necessity of using sustainable methods to have lower energy consumed. The whole energy of all different steps of the life cycle is called "embodied energy" and the process of assessing this embodied energy input is called "life cycle assessment” (LCA). Despite the great importance of LCA, the quantitative test of such a hypothesis has been less of a concern for previous researchers in our country Iran, and due to the lack of organized information from industrial units, such a study has also faced the difficulties of data collection. In this regard, this paper evaluates the amount of embodied energy consumption of building materials at different stages of their life cycle. To reach this goal this research evaluates the initial energy quantitatively (including different stages). More precisely, the present study, based on life cycle assessment system, quantitatively evaluates and compares energy input in different stages of cradle to gate scope, in 3 case studies: Concrete, wood, and brick. The results finally show that per ton of concrete produced 110 (kw.h) electrical energy, 35 (ton) of gas, 170 (Mj) of human Energy, and 495 (g) of Gasoline is consumed, while these quantities for per ton of Brick are 35(kw.h), 18.2 (ton), 72 (Mj) and 250 (g) and For one ton of timber produced are 900 (Kw.h), no Gas used, 170 (Mj) and 495 (g).
A. A. Genetie; D. B. Beyene; A. K. Befekadu
Abstract
The main objective of the study is to analysis sustainability of water supply and distribution system of Asossa town. While conducting this research, both primary and secondary data were collected and software such as water GEMSV8i, ArcGIS version10.4.1 and GPS Garmin72 were used. The water supply source ...
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The main objective of the study is to analysis sustainability of water supply and distribution system of Asossa town. While conducting this research, both primary and secondary data were collected and software such as water GEMSV8i, ArcGIS version10.4.1 and GPS Garmin72 were used. The water supply source of the study area yields 46.1 l/s but only 23.6 l/s of water used. The simulated result of extended period simulation showed that the performance of hydraulic parameters were pressure 21.05 % for pressure value 60 m head and the velocity of pipe flow showed that 84.86 % for velocity
K. Gholamian; H. Vakilifard; G. Talebnia; R. Hejazi
Abstract
The purpose of this paper is to identify and prioritize environmental criteria of sustainable outsourcing model in Fajr Jam Gas refining company with hierarchical analysis procedure method. In order to identify environmental criteria, the identified strategic goals of the model are categorized in the ...
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The purpose of this paper is to identify and prioritize environmental criteria of sustainable outsourcing model in Fajr Jam Gas refining company with hierarchical analysis procedure method. In order to identify environmental criteria, the identified strategic goals of the model are categorized in the most four aspects of the balanced scorecard and three dimensions of economic, social and environmental sustainability. to determine the importance of each environmental criteria in terms of four groups of experts (members of the outsourcing committee, managers, supervisors and experts in the company) are reported using Analytic Hierarchy Process (AHP) method and the results of research are reported through EXPERT CHOICE software. The findings indicated that in order to design sustainable outsourcing model using a balanced scorecard, seven strategic objectives in environmental dimension had to be considered two objectives in learning and growth aspect, two objectives in internal business processes aspect, two objectives in customer satisfaction aspect and a strategic environmental objective in financial performance aspect were identified. Finally, using a paired comparisons questionnaire, the importance of each strategic objective was calculated and prioritized.