scholarly journals Sustainability of the usable solid waste market in Bogota (Colombia)

Author(s):  
María del Pilar Sánchez Muñoz ◽  
Johan Manuel Redondo ◽  
José Gabriel Cruz Cerón ◽  
Danny Ibarra-Vega ◽  
Abel Del Rio Cortina ◽  
...  

Abstract This document shows a model that seeks the sustainability of the Usable Solid Waste (USW) market in Bogotá, based on System Dynamics (SD), in order to understand the complex behavior of the phenomena that should be presented in this city market in the context of sustainability. Dynamic hypothesis suggests that two negative feedback structures exits, one that represents demand and another that represents supply and that interact under the assumption of free market with government intervention. Different strategies were modeled on both the demand side and the supply side to manage the system. As conclusion, the linear way in which the USW market currently develops is not adequate. It is necessary to institutionalize the market using the price so that it contributes to its sustainability and that both demand and supply are encouraged at the same time. Besides, district policy oriented to supply must be in accordance with the national policy that encourages demand to use more USW. Likewise, the internalization by all the actors of the market and applicability of the norm is required. The creation of public-private partnerships is required for the development of innovative projects in this area.

This research aims to study the problems and find solutions of major agro-industries in Chiang Mai, Thailand. The sample was divided into two parts: The supply side was the government agency, educational institutions and civil society. Demand side was Agro-Industry entrepreneurs. The methodology was focus on meeting the stakeholder debate, and group workshop, the first step of the research was selected the potential agro-industry group to study then in the operating phase, the survey was conducted to analyze and synthesize the problems of agro-industry and find solutions by group meetings in order to present a holistic problem-solving model. This process will provide opportunity for stakeholders and related agencies to collaborate and propose appropriate guidelines for action. The results show that, within demand side, the three most important issues are labor issues, marketing and production problems respectively. While the supply side, the top three issues are the integration problems, lacking of language skills / expertise, and lacking of database. Based on the analysis of both demand and supply side, there is a lack of concrete cooperation from relevant agencies, especially in policy cooperation. Therefore, a policy that responds to the problems of agro-industry is essential for all agencies to focus on and implement concrete measures to address sustainable issues.


Energies ◽  
2020 ◽  
Vol 13 (1) ◽  
pp. 242 ◽  
Author(s):  
Shunyong Yin ◽  
Jianjun Xia ◽  
Yi Jiang

Combined heat and power (CHP), an efficient heating method with cascades use of energy, accounts for approximately 50% of the heat sources in northern China. Many researchers have made significant efforts to improve its energy efficiency and environmental effects with important achievements. Given that the system produces heat and electricity at the same time, this study focuses on the role of CHP in the holistic urban energy system and points out the mismatch between the demand and supply sides of urban energy systems by using the heat-to-power ratio as a parameter. The calculation method and characteristics of the supply side heat-to-power ratio of eight heating methods and the maximum demand side heat-to-power ratio for 19 cities in northern China are displayed. After the analysis, it is concluded that (1) the maximum demand side heat-to-power ratio in the cities varies from 1.0 to 5.9, which is affected by the location and social, economic, and industrial structures. (2) In most of the cities, with the current energy structure, the demand side heat-to-power ratios are always larger than the supply side heat-to-power ratios. (3) The reduction in heating demand, surplus heat recovery, and the use of a highly efficient electric heating method, such as the heat pump, can help solve the mismatch of the heat-to-power ratio between the demand and supply sides. These conclusions can guide the urban energy planning and system construction.


2019 ◽  
Vol 2 (1) ◽  
pp. 1-8
Author(s):  
Pakorn Udomthanasarnsakul ◽  
Tidarat Cholprasertsuk ◽  
Panomporn Chalermwan

This research aims to study the problems and find solutions of major agro-industries in Chiang Mai, Thailand. The sample was divided into two parts: The supply side was the government agency, educational institutions and civil society. Demand side was Agro-Industry entrepreneurs. The methodology was focus on meeting the stakeholder debate, and group workshop, the first step of the research was selected the potential agro-industry group to study then in the operating phase, the survey was conducted to analyze and synthesize the problems of agro-industry and find solutions by group meetings in order to present a holistic problem-solving model. This process will provide opportunity for stakeholders and related agencies to collaborate and propose appropriate guidelines for action. The results show that, within demand side, the three most important issues are labor issues, marketing and production problems respectively. While the supply side, the top three issues are the integration problems, lacking of language skills / expertise, and lacking of database. Based on the analysis of both demand and supply side, there is a lack of concrete cooperation from relevant agencies, especially in policy cooperation. Therefore, a policy that responds to the problems of agro-industry is essential for all agencies to focus on and implement concrete measures to address sustainable issues.


2009 ◽  
Vol 54 (02) ◽  
pp. 183-196
Author(s):  
NICHOLAS C. S. SIM

This paper explains how indeterminacy in a one-sector model may arise due to externalities in the disutility of labor supply, which is termed as demand-side indeterminacy. This contrasts supply-side indeterminacy that is driven by externalities in the production function as exemplified by Benhabib and Farmer (Journal of Economic Theory, 1994). For the one-sector models considered, I find that indeterminacy arises more easily from the demand than from the supply side. In addition, demand and supply-side indeterminacy generate different cyclical patterns of wages, a feature that is useful for identifying episodes of self-fulfilling prophecies within the two types of indeterminacy.


Ekonomia ◽  
2017 ◽  
Vol 23 (1) ◽  
pp. 59-71
Author(s):  
Małgorzata Niklewicz-Pijaczyńska ◽  
Aldona Sobiecka

Inventive activity in the technology sector related with hearing loss when confronted with demand stimulusThe issue of the article focuses on the demand and supply innovation incentives aimed at people with varying degrees of hearing loss. The aim of this publication is to confront actual inventive activity representing the supply side with expectations of their users who create demand-side innovative incentives. Thus, for the purposes of this article will be used two research methods. Inventive activity will be analyzed using the patent metrics tools. Its assessment and identification of users expectations on the example of hearing aids will be made based on results of questionnaires.


Energies ◽  
2018 ◽  
Vol 11 (12) ◽  
pp. 3314 ◽  
Author(s):  
Zixu Liu ◽  
Xiaojun Zeng ◽  
Fanlin Meng

One of the main challenges in the emerging smart grid is to jointly consider the demand and supply, which is also reflected in the wholesale market (supply side) and the retail market (demand side). When integrating the demand and supply side into one framework, the mechanism for determining the market clearing price has been changed. This is due to the demand variations in the demand side in response to the market clearing price and the change of generation costs in the supply side from the demand variation. In order to find the best balance between the supply and demand under the demand response management scheme, this paper proposes a new integrated supply and demand coordination mechanism for the electricity market and smart pricing methods for generator and retailers. Another important contribution of this paper is to develop an efficient algorithm to find the match equilibrium between the demand and supply sides in the new proposed mechanism. Experimental results demonstrate that the new mechanism can effectively handle unpredictable demand under dynamic retail pricing and support the ISO to dispatch the generation economically. It can also help in achieving the goals of dynamic pricing such as maximizing the profits for retailers.


1996 ◽  
Vol 04 (04) ◽  
pp. 417-432 ◽  
Author(s):  
MAGNUS KLOFSTEN ◽  
ANN-SOFI MIKAELSSON

Like many other countries, Sweden is putting a lot of effort into the development of effective support for small firms. This has resulted in the emergence of a number of programmes intended to increase the number and quality of start-ups and to improve their chances of survival and further growth. In the development of support programmes, it is important to be aware of potential barriers on the demand side (the perceived benefit of taking part in programmes) as well as on the supply side (the support organisation’s ability to develop satisfactory programmes). This paper presents the preliminary results of a survey of 158 technology-based firms in and around Linköping, Sweden. The focus of this research was to study the dynamics of the firm’s participation in the support programmes. The firm’s attitude towards support programmes, how the gap between demand and supply occurs, as well as, how this gap could be bridged to achieve effective support activities was studied. The results showed that the supply-demand gap became apparent when the firm’s situation was compared to its participation in various programmes. The implications of the study are that the support organisations should be focused on the firms’ real needs, that they should facilitate communication between their organisation and the small firm sector and should secure a supply of good programme managers.


2020 ◽  
Vol 19 (3) ◽  
pp. 5-12
Author(s):  
Edyta Cegielska

The article aims to identify limitations on the activity of business angels (also known as “angel investors”) in financing startups. Business angels are the main source of external capital for startups, aside from family and friends. However, the degree to which they are active in the economy, in Poland and in other countries, is bound by certain restrictions, a number of which are related to supply and demand. The article seeks to deepen the theoretical considerations of these limitations from the perspective of demand and supply constraints. The study demonstrates that on the demand side, the greatest limitations that hinder business angels from financing startups are overly-complicated tax laws and a lack of tax incentives for investment activities. On the supply side, it is the failure to meet investment criteria imposed by business angels. Based on the conducted research, it can be concluded that without the interference of public institutions it will be difficult to effectively reduce the limitations on the activity of business angels.


2014 ◽  
Vol 3 (4) ◽  
pp. 36-64 ◽  
Author(s):  
András Kővári ◽  
Erik Pruyt

This paper presents a model-based exploration and policy analysis related to prostitution and prostitution-related human trafficking. After a brief introduction to prostitution and prostitution-related human trafficking, the paper zooms in on the Dutch situation. A System Dynamics simulation model related to the Dutch situation developed to explore and provide policy insights is subsequently presented. Using the simulation model, policies are first of all tested, and preliminary conclusions are drawn. These preliminary conclusions are further tested under deep uncertainty, using variants of the simulation models. The final conclusions are that supply side measures alone are counter-productive and that demand side measures are necessary but insufficient to solve prostitution-related human trafficking.


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