scholarly journals Economic Modelling for Self-c=Consumption of Roof-Top Photovoltaic Systems in Spain

Author(s):  
Álvaro Rodríguez-Martínez ◽  
Carlos Rodríguez-Monroy

This article has been developed to assess the economic feasibility of a roof-top photovoltaic installation of industrial self-consumption. Numerical models that enable an interested person to obtain the main expected parameters will be generated. To do this, a calculation methodology will be generated through which the reader, knowing the location of the facility and dimensions of the roof, will be able to calculate the maximum installable power, the main parameters related to production, the cost of the installation, and the LCOE of the plant. The use of actual costs will be facilitated in case they are known, but it will remain possible to apply the costs of the major equipment (modules, inverter, and structure) considered throughout the article. This developed calculation methodology will also allow a quick comparison of the forecasts of production, CAPEX, and LCOE of plants designed with different inclinations and different types of modules. Consequently, it will be especially useful for decision-making before developing the plant's basic engineering. Moreover, the calculations used for modeling the LCOE will be analyzed in depth. This analysis will allow evaluating how the different technical variables affect the profitability of a photovoltaic installation, such as the selected tilt, the location, the module's technology, or the available area.

2018 ◽  
Author(s):  
Nura Sidarus ◽  
Stefano Palminteri ◽  
Valérian Chambon

AbstractValue-based decision-making involves trading off the cost associated with an action against its expected reward. Research has shown that both physical and mental effort constitute such subjective costs, biasing choices away from effortful actions, and discounting the value of obtained rewards. Facing conflicts between competing action alternatives is considered aversive, as recruiting cognitive control to overcome conflict is effortful. Yet, it remains unclear whether conflict is also perceived as a cost in value-based decisions. The present study investigated this question by embedding irrelevant distractors (flanker arrows) within a reversal-learning task, with intermixed free and instructed trials. Results showed that participants learned to adapt their choices to maximize rewards, but were nevertheless biased to follow the suggestions of irrelevant distractors. Thus, the perceived cost of being in conflict with an external suggestion could sometimes trump internal value representations. By adapting computational models of reinforcement learning, we assessed the influence of conflict at both the decision and learning stages. Modelling the decision showed that conflict was avoided when evidence for either action alternative was weak, demonstrating that the cost of conflict was traded off against expected rewards. During the learning phase, we found that learning rates were reduced in instructed, relative to free, choices. Learning rates were further reduced by conflict between an instruction and subjective action values, whereas learning was not robustly influenced by conflict between one’s actions and external distractors. Our results show that the subjective cost of conflict factors into value-based decision-making, and highlights that different types of conflict may have different effects on learning about action outcomes.


Innotrans ◽  
2020 ◽  
pp. 24-28
Author(s):  
Oksana Dmitrievna Pokrovskaya ◽  
◽  
Evgeny Sergeevich Kulikov ◽  

The work is devoted to the analysis of existing directions of digitalization of the railroad industry in the segment of terminal and warehousing services. Application software has been developed for the economic feasibility of decision-making on the workflow management of the cargo terminal. The novelty elements are noted and the main working procedures, performed by the program are described. The characteristic of the interface is given, and macro flowchart of the program operation is given. The program allows calculating the cost of warehousing cargo, taking into account the occupied area. The results of the calculation can be applied in the design of cargo terminals and justifying the feasibility of attracting additional cargo flows.


2017 ◽  
Vol 3 (1) ◽  
pp. 51
Author(s):  
Jorge Orondo ◽  
Luis A. Alonso ◽  
Cesar Bedoya

ResumenDesde hace tiempo, muchos especialistas señalan que la clave para incorporar la sostenibilidad a una propuesta, de manera económicamente viable, es considerar los objetivos y criterios sostenibles desde los primeros pasos del proyecto, porque es cuando la relación entre la efectividad de las estrategias planteadas y el coste de implementarlas es más beneficiosa. El principal objetivo de este trabajo ha sido el desarrollo de una herramienta, denominada Green Improvement Tool v1.7, que simplifica al máximo las cuestiones relativas a la sostenibilidad, dando solución a las necesidades de sus potenciales usuarios y reuniendo al mismo tiempo varias características: claridad en sus términos y objetivos (para evitar confusiones y fallos de implementación), viabilidad técnica y económica en su aplicación, flexibilidad suficiente para adaptarse a situaciones y contextos diversos, capacidad de promover el uso de diferentes tecnologías y, ante todo, estimular el interés de dichos usuarios en un proceso de mejora continua. Los ensayos realizados en casos de estudio reales, durante el proceso de validación, indican que la herramienta permite anticipar desde las fases iniciales, con una fiabilidad media superior al 95%, más del 80% de los resultados al final del proceso.AbstractMany experts have long pointed out that the key to incorporating sustainability into a proposal in an economically viable way is to consider sustainable objectives and criteria from the very first steps of the project because the relationship between the effectiveness of the strategies proposed and The cost of implementing them is more beneficial. The main objective of this work has been the development of a tool, called Green Improvement Tool v1.7, which simplifies as much as possible the questions related to sustainability, giving solution to the needs of its potential users and bringing together several characteristics: Clarity in terms and objectives (to avoid confusion and failure to implement), technical and economic feasibility in its application, sufficient flexibility to adapt to different situations and contexts, ability to promote the use of different technologies and, above all, to stimulate interest of these users in a process of continuous improvement. During the validation process, the tests carried out in real cases indicate that the tool allows more than 80% of the results at the end of the process to be anticipated from the initial phases, with an average reliability of more than 95%. 


1996 ◽  
Vol 11 (3) ◽  
pp. 155-158 ◽  
Author(s):  
C Gudex

SummaryThis paper provides a brief overview of issues to consider in evaluating patient benefit from health care. Different types of measures are described and it is noted that the choice of measure is dependent upon the purpose of the study. The cost-utility approach to evaluation is discussed in more detail. This approach is often criticised but it raises important issues in medical decision-making and has considerable potential in the evaluation of patient benefit from health care.


2014 ◽  
Vol 136 (4) ◽  
Author(s):  
Sergio Valero Verdú ◽  
Carolina Senabre Blanes ◽  
Demetrio López Sánchez

The article presents an economical study of the use of electric vehicles (Evs) in terms of years of amortization money saved and cost and expenses, etc. It has been compared combustion vehicles with the electric counterparts in terms of power and features appreciated by the user in the automobile market. The purpose of the study was to analyze the feasibility to recharge different electric vehicles by solar photovoltaic modules, so that energy generation would not contribute to any CO2 emissions, when the system would be installed and ready to supply these vehicles. The study also shows a comparative analysis of the cost of purchasing electricity to the distributor compared with the using of a photovoltaic system designed to recharge the vehicle, even it has also been calculated the depreciation. Finally, it has been analyzed comparatively the type of the solar photovoltaic system considered more economically viable for recharging a pure EV, therefore it has been compared projects on houses and on a parking to recharge several vehicles.


2017 ◽  
Vol 76 (3) ◽  
pp. 107-116 ◽  
Author(s):  
Klea Faniko ◽  
Till Burckhardt ◽  
Oriane Sarrasin ◽  
Fabio Lorenzi-Cioldi ◽  
Siri Øyslebø Sørensen ◽  
...  

Abstract. Two studies carried out among Albanian public-sector employees examined the impact of different types of affirmative action policies (AAPs) on (counter)stereotypical perceptions of women in decision-making positions. Study 1 (N = 178) revealed that participants – especially women – perceived women in decision-making positions as more masculine (i.e., agentic) than feminine (i.e., communal). Study 2 (N = 239) showed that different types of AA had different effects on the attribution of gender stereotypes to AAP beneficiaries: Women benefiting from a quota policy were perceived as being more communal than agentic, while those benefiting from weak preferential treatment were perceived as being more agentic than communal. Furthermore, we examined how the belief that AAPs threaten men’s access to decision-making positions influenced the attribution of these traits to AAP beneficiaries. The results showed that men who reported high levels of perceived threat, as compared to men who reported low levels of perceived threat, attributed more communal than agentic traits to the beneficiaries of quotas. These findings suggest that AAPs may have created a backlash against its beneficiaries by emphasizing gender-stereotypical or counterstereotypical traits. Thus, the framing of AAPs, for instance, as a matter of enhancing organizational performance, in the process of policy making and implementation, may be a crucial tool to countering potential backlash.


2016 ◽  
Vol 4 (2) ◽  
Author(s):  
Marcela T Oliveira ◽  
Henrique C Sampaio ◽  
José N Salvador Júnior

The article deals with the distribution of agricultural periodicals on the territory of the Russian Em-pire in the early twentieth century. Before that there were practically no publications on the pages of sci-entific magazines. Great emphasis is placed on the analysis of agricultural magazines published before 1917 in the Upper Volga region, namely in Vladimir, Kostroma, Tver and Yaroslavl provinces. Thanks to existed in pre-revolutionary Russian periodicals on agricultural subjects advanced knowledge of agron-omy, agriculture, soil science, horticulture, fruit growing, vegetable growing, winemaking, viticulture, 135 tobacco growing, livestock, poultry, bee-keeping, veterinary medicine, forestry, and hunting, land man-agement, irrigation, horse breeding were promoted. On the basis of statistical data, office documentation and other published sources, the author draws conclusions about the degree of accessibility of agricul-tural periodicals for the population, including the peasantry. Availability of agricultural periodicals largely depended on its price, so the author studied the situation with the cost of the annual subscription fee of these publications. The article investigates the issues of periodicity of agricultural magazines and newspapers, the exact number of such publications, as well as their subject matter. Existence duration of different types of periodicals is analyzed, the main publishers of magazines and newspapers, places of their publication are revealed. A prominent place is given to the publishing activities of agricultural pub-lic organizations and zemstvo self-government bodies. It is concluded that natural process of agricultural knowledge distribution among the population of Russia through publications on the pages of periodicals was disrupted by revolutionary events of 1917.


2020 ◽  
Vol 13 (5) ◽  
pp. 884-892
Author(s):  
Sartaj Ahmad ◽  
Ashutosh Gupta ◽  
Neeraj Kumar Gupta

Background: In recent time, people love online shopping but before any shopping feedbacks or reviews always required. These feedbacks help customers in decision making for buying any product or availing any service. In the country like India this trend of online shopping is increasing very rapidly because awareness and the use of internet which is increasing day by day. As result numbers of customers and their feedbacks are also increasing. It is creating a problem that how to read all reviews manually. So there should be some computerized mechanism that provides customers a summary without spending time in reading feedbacks. Besides big number of reviews another problem is that reviews are not structured. Objective: In this paper, we try to design, implement and compare two algorithms with manual approach for the crossed domain Product’s reviews. Methods: Lexicon based model is used and different types of reviews are tested and analyzed to check the performance of these algorithms. Results: Algorithm based on opinions and feature based opinions are designed, implemented, applied and compared with the manual results and it is found that algorithm # 2 is performing better than algorithm # 1 and near to manual results. Conclusion: Algorithm # 2 is found better on the different product’s reviews and still to be applied on other product’s reviews to enhance its scope. Finally, it will be helpful to automate existing manual process.


Author(s):  
Anastasiya V. Mironova ◽  
Igor’ V. Liskin ◽  
Irina I. Afonina

Neglect of soils leads to their degradation, worsens useful properties, and reduces fertility and productivity. (Research purpose) The research purpose is in conducting a comparative analysis of technologies for treating degraded soils, taking into account the economic feasibility of their restoration in non-black-soil regions of Russia. (Materials and methods) The article shows the main technological scheme of restoration of degraded soils. Authors have identified the main groups of land that are located in non-black-soil regions of Russia. (Results and discussion) The article presents the need for equipment, economic and labor costs for the restoration of each type of land in the non-black-soil regions of Russia. Authors took into account that the salary of machine operators depends on the time of direct execution of the task. It was found that the restoration of virgin and fallow lands was the most preferable from the economic, energy-saving and environmental points of view. The article shows that the restoration of pasture areas exceeds the cost of processing virgin lands, but the number of necessary machine and tractor units is comparable to work on virgin lands. Authors recommend to develop the soils with woody and shrubby vegetation in the first place, starting with land occupied by young plants. It is necessary to take into account the criteria for the fertility of the soil layer. It was found that soils with a small excess of moisture have small cost of its development, while on heavily swampy soils the cost of work on their development is many times higher than the cost of restoring other types of land. (Conclusion) The article shows that the restoration of neglected land is a necessary condition for improving the provision of human needs for food and a number of industrial goods. First of all, it is necessary to develop land that requires minimal investment of economic and labor costs.


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