5 research outputs found

    Investigating the Nexus between Public Investment and Morocco’s Economic Growth through ARDL Modeling

    Get PDF
    As a primary pillar of economic growth, public investment, which mainly covers expenditure on education, research and development as well as the infrastructure, has a strong impact on the economic development of countries. In this context, as perspectives of this research, we aim to contribute to the answer to the following questions : should moroccan public policies maintain a high level of public investment to support the economic growth ? What place should they give to private investment in this equation, and what role do inflation and education investment play in the relationship between public investment and growth ? Thus, based on the endogenous growth theory, we explore the link between public investment and growth in the moroccan context over the period 2004-2020th. For this purpose, we use the ARDL (Auto-Regressive Distributed Lag) model to test the cointegration relationship between these two variables. As control variables of the model, we use foreign direct investment, inflation, and education investment. The key points of this study are the analysis of the effect (positive/negative) and (significant/non-significant) of public investment on economic growth

    Using Static Concentrator Technology to Achieve Global Energy Goal

    Get PDF
    Solar energy has demonstrated promising prospects in satisfying energy requirements, specifically through solar photovoltaic (PV) technology. Despite that, the cost of installation is deemed as the main hurdle to the widespread uptake of solar PV systems due to the use of expensive PV material in the module. At this point, we argue that a reduction in PV cost could be achieved through the usage of concentrator—which are commonly produced from polymers. A solar concentrator is a type of lens that is capable of increasing the collection of sun rays and focusing them onto a lesser PV area. The cost of the solar module could then be reduced on the assumption that the cost of introducing the solar concentrator in the solar module design is much lower than the cost of the removed PV material. Static concentrators, in particular, have great promise due to their ability to be integrated at any place of the building, usually on the building facade, windows and roof, due to their low geometrical concentration. This paper provides a historic context on the development of solar concentrators and showcases the latest technological development in static photovoltaic concentrators including non-imaging compound parabolic concentrator, V-trough, luminescent solar concentrator and quantum dot concentrator. We anticipated that the static low concentrating PV (LCPV) system could serve to enhance the penetration of PV technology in the long run to achieve the Sustainable Development Goal (SDG) 7—to open an avenue to affordable, reliable, sustainable, and modern energy for all by 2030

    Development of a control system for a domestic grid-connected wind turbine

    Get PDF
    In the United Kingdom (UK), homeowners who install grid connected renewable energy sources receive a threefold benefit. They can use the electricity generated by the source, they enjoy reduced household bills and they can also receive Feed-in Tariff payments from the UK government. Tariffs are paid for generating electricity and for exporting electricity back to the grid. Savings can be maximized by correctly managing the ratio of number of units consumed by the homeowner to the number of units exported to the grid. In order to achieve a low percentage export situation, it was postulated that a control system would be needed. This paper proposes a control system for a small wind turbine based on an Arduino Uno microcontroller. The system was designed and built in order to evaluate its effectiveness. Results showed that the control system was effective in ensuring a low percentage export. When immediate domestic demand was met, surplus electricity was diverted to a storage circuit. Only as a last resort, when domestic and storage demand was met, was electricity exported. A cost analysis of the system showed that having a control system incorporated as part of the wind turbine installation could lead to savings of more than €12,000 over the life of the product

    Development of a control system for a domestic grid-connected wind turbine

    Get PDF
    In the United Kingdom (UK), homeowners who install grid connected renewable energy sources receive a threefold benefit. They can use the electricity generated by the source, they enjoy reduced household bills and they can also receive Feed-in Tariff payments from the UK government. Tariffs are paid for generating electricity and for exporting electricity back to the grid. Savings can be maximised by correctly managing the ratio of number of units consumed by the homeowner to the number of units exported to the grid. In order to achieve a low percentage export situation, it was postulated that a control system would be needed. This paper proposes a control system for a small wind turbine based on an Arduino Uno microcontroller. The system was designed and built in order to evaluate its effectiveness. Results showed that the control system was effective in ensuring a low percentage export. When immediate domestic demand was met, surplus electricity was diverted to a storage circuit. Only as a last resort, when domestic and storage demand was met, was electricity exported. A cost analysis of the system showed that having a control system incorporated as part of the wind turbine installation could lead to savings of more than {pound}12,000 over the life of the product

    Effects of bacteria on male fertility: Spermatogenesis and sperm function

    No full text
    corecore