scholarly journals The Redesigning of Tires and the Recycling Process to Maintain an Efficient Circular Economy

2019 ◽  
Vol 11 (19) ◽  
pp. 5204 ◽  
Author(s):  
Dan Dobrotă ◽  
Gabriela Dobrotă ◽  
Tiberiu Dobrescu ◽  
Cristina Mohora

The redesigning of tires is addressed from two points of view, namely the structure of the materials and the constructive shape of these products. The necessity for research is justified by the fact that even during the product design stage, there may be situations that can irreversibly affect the separation of product components (rubber and insertion), and because it is strictly necessary to achieve the reuse and recycling of waste components. The proposed redesign refers to the inscription of the types of materials that are present in each area on the lateral surface of the tire. Thus, the new redesign has positive effects both economically and socially. To highlight these, a cost-benefit analysis (CBA) has been applied and the net present value (NPV) as well as the internal rate of return (IRR) have been determined for the classic scenario and for the two proposed scenarios. Testing the financial sustainability of the proposed solution was done through sensitivity analysis. An analysis of the new tire design from the point of view of the circular economy was also presented. The results obtained have highlighted the effectiveness of the proposed solution from a technical, economic, social, and protection of the environment point of view.

2012 ◽  
Vol 3 (3) ◽  
pp. 1-30 ◽  
Author(s):  
Xiao Liang ◽  
Meine Pieter van Dijk

The present paper carries out a cost benefit analysis of centralized wastewater reuse systems in Beijing. This study consists of two parts: financial analysis and economic analysis. The financial analysis is made from the point of view of plant manager, in which financial benefits and cost is calculated. The economic analysis is made from the point of view of society, in which the economic, environmental and social benefits and cost are determined. The results of financial analysis show that the financial benefits are larger than cost, which means the centralized wastewater reuse systems are financially feasible. It implies that the investment on centralized wastewater reuse systems is profitable. The results of economic analysis show that the ratio of benefit to cost is larger than 1, which means the centralized wastewater reuse systems are economically feasible. It implies that centralized wastewater reuse systems have positive effects on the society. From the point of view of plant manager, centralized wastewater reuse systems could operate in a long term, while from the point of view of government or society, the centralized wastewater reuse systems are worth to be promoted.


2011 ◽  
pp. 57-78
Author(s):  
I. Pilipenko

The paper analyzes shortcomings of economic impact studies based mainly on input- output models that are often employed in Russia as well as abroad. Using studies about sport events in the USA and Olympic Games that took place during the last 30 years we reveal advantages of the cost-benefit analysis approach in obtaining unbiased assessments of public investments efficiency; the step-by-step method of cost-benefit analysis is presented in the paper as well. We employ the project of Sochi-2014 Winter Olympic and Paralympic Games in Russia to evaluate its efficiency using cost-benefit analysis for five accounts (areas of impact), namely government, households, environment, economic development, and social development, and calculate the net present value of the project taking into account its possible alternatives. In conclusion we suggest several policy directions that would enhance public investment efficiency within the Sochi-2014 Olympics.


Animals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 1297
Author(s):  
Juntae Kim ◽  
Hyo-Dong Han ◽  
Wang Yeol Lee ◽  
Collins Wakholi ◽  
Jayoung Lee ◽  
...  

Currently, the pork industry is incorporating in-line automation with the aim of increasing the slaughtered pork carcass throughput while monitoring quality and safety. In Korea, 21 parameters (such as back-fat thickness and carcass weight) are used for quality grading of pork carcasses. Recently, the VCS2000 system—an automatic meat yield grading machine system—was introduced to enhance grading efficiency and therefore increase pork carcass production. The VCS2000 system is able to predict pork carcass yield based on image analysis. This study also conducted an economic analysis of the system using a cost—benefit analysis. The subsection items of the cost-benefit analysis considered were net present value (NPV), internal rate of return (IRR), and benefit/cost ratio (BC ratio), and each method was verified through sensitivity analysis. For our analysis, the benefits were grouped into three categories: the benefits of reducing labor costs, the benefits of improving meat yield production, and the benefits of reducing pig feed consumption through optimization. The cost-benefit analysis of the system resulted in an NPV of approximately 615.6 million Korean won, an IRR of 13.52%, and a B/C ratio of 1.65.


2014 ◽  
Vol 3 (5) ◽  
pp. 47
Author(s):  
Sanni Yaya ◽  
Xiaonan Li

This paper offers a general guide on how to conduct a proper economic analysis for community-based intervention projects. Identification and quantification of costs and benefits are the focus of the cost benefit analysis. We categorize costs and benefits from human and physical perspectives and pay special attention to the measures of saving human lives accompanied by the proposed calculation methods. We recommend net present value and benefit-cost ratio as the criteria to assess projects and highlight some challenges remaining in the analysis.


2003 ◽  
Vol 8 (2) ◽  
pp. 311-330 ◽  
Author(s):  
V. Santhakumar ◽  
Achin Chakraborty

This paper presents the operational procedures involved in incorporating the environmental costs in the cost–benefit analysis of a hydro-electric project. The proposed project, if implemented, would result in the loss of 2,800 hectares of tropical forests and dislocation of two settlements of about 200 families who are currently dependent on the forests for their livelihood. The forests are mainly used for extracting reed – a material used both by traditional artisans and the paper-pulp industry. The potential environmental costs and benefits of the project are identified and approximate estimates of some of these costs are made for items such as carbon sequestration, bio-diversity, and so on, based on similar estimates made elsewhere. These estimated environmental costs are incorporated into the analysis, and the hypothetical estimate of the non-use value, which would make the project's net benefit zero, is estimated under different discount rates. The analysis brings into sharp focus some crucial factors that have a direct bearing on the social trade-off involved in the project choice.


2016 ◽  
Vol 61 (03) ◽  
pp. 1640013 ◽  
Author(s):  
YEW-KWANG NG

Mishan’s emphasis on the costs of economic growth half a century ago is becoming more important in this era of environmental concerns. More recently, another possible source of immiserizing growth is the one-child policy (recently relaxed) of China. This resulted in a biased sex-ratio and higher competition to earn incomes (to increase the probability of getting a wife), resulting in positive effects on GDP but negative effects on welfare. The implications of welfare-reducing growth for cost-benefit analysis and the legalization of prostitution are also discussed.


1989 ◽  
Vol 102 (3) ◽  
pp. 473-483 ◽  
Author(s):  
A. Carducci ◽  
C.M. Avio ◽  
M. Bendinelli

SUMMARYA mathematical model has been developed which allows estimation of the epidemiological and economic effects of different tetanus vaccination strategies. The model was used to simulate the epidemiology of tetanus in italy from 1955 to 1982, and then applied to a district of Tuscany by utilizing data obtained from a seroepidemiological survey carried out in the same area. For this district we simulated vaccination programmes designed to reach, within 1 or 10 years, coverages of 60 or 90% of the population aged over 10 years who had not been exposed to the neonatal vaccination programme. The most effective strategy, from both the epidemiological and economic point of view, seems to be 90% coverage reached in 1 year's time. Benefits would be increased by improving the reliability of vaccinal anamnesis.


2016 ◽  
Vol 61 (4) ◽  
pp. 875-892
Author(s):  
Piotr Krawczyk ◽  
Marzena Majer ◽  
Joanna Krzemień

Abstract The paper presents possibilities of an economic evaluation of hard coal mines, using Cost Benefit Analysis (CBA). Suggested methodology for CBA applied to the economic evaluation of a mine allows to conduct a complex evaluation of mine’s functionality in connection to Polish conditions. Additionally to financial aspects, significant from the point of view of the mine’s owner, the paper includes social and environmental effects as a result of mining activities. Proposed methodology has undergone tests which used averaged data obtained from two selected hard coal mines located in the Upper Silesian Coal Basin. Presented results confirm the validity of social costs and benefits, and environmental losses resulting from mining operation, which were included in analysis comprehensively evaluating the efficiency of hard coal mines.


2020 ◽  
Vol 15 (1) ◽  
pp. 91-101
Author(s):  
Elfitri Santi ◽  
Afridian Wirahadi ◽  
Arif Wahyu Saputra ◽  
Rasyidah Mustika ◽  
Ferdawati

The official goverment vehicles supply demand the goverment allocate fund in carefully and precise based on the needs. The value of money analysis between buy, rent, and leasing to supplying the official vehicles in Polytechnic State’s of Padang. intent on calculating, analyze, and comparing which alternative that make more value of money between the provisions system of buying, renting and leasing. Methods this Research is Qualitative and The analysis instrument that use in this research is Net Present Value Method also calculating the cost benefit analysis . The research examine 3 type or merk that represent the officeholder vehicles, such as Toyota Hiace Commuter, Kijang Innova V A/T, dan Avanza Veloz. The result of this research indicated that officeholder vehicles supplying system through the buying system is has more benefit that follow by the leasing system and the renting system. This research result could be a reference for Goverment in choosing supplying system of officeholder vehicles in Padang State’s Polytechnic.


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