What can SVAR models tell us about the impact of Public Expenditure Shocks on macroeconomic variables in algeria? A Slight Hint to the COVID-19 Pandemic

Research background: Public spending is a generator of economic growth as well as its components; this reality is more depicted in the era of the COVID-19 world pandemic where a recession in economic activities has touched all countries. Purpose: In this paper, we tried to study the impact of shocks in public expenditure on some macroeconomic variables in Algeria during the period (1970–2019). Research methodology: The VAR Structural models were used to study the response of these variables to shocks in public spending in Algeria. Results: The results of the modeling indicate a direct response of both exports and imports to a shock in the levels of public expenditure, but this response is relatively weak to the variable value of exports (especially in the short term), which is mainly due to the structure of the Algerian economy that is mainly dependent on the export of oil and gas, which in turn is mainly affected by international energy factors e.g. prices, supply, and demand. For the rate of inflation, there was an inverse response to shocks in the level of public spending. In the context of the global health and economic crisis, we will witness a further faltering of economic growth in Algeria. Novelty: Our contribution is a new feature of the application of the SVAR model in the era of the COVID-19 pandemic that focused on analyzing the impacts of public expenditure on exports and imports

Positive Energy Balance Calculation in Two Case Studies

The calculation of the energy balance at the district level is complex since it includes a diverse set of loads, technologies, energy carriers, trading interactions between users and external grids (power, district heating/cooling, gas, etc.) and assumptions such as the identification of Primary Energy Factors (PEFs) in different contexts. This research validates the H2020 MAKING-CITY methodology for calculating the energy balance of Positive Energy Districts (PEDs) in two case studies: the cities of Groningen and Torrelago. For each case, the steps defined in the methodology are followed, dealing with assumptions on non-renewable Primary Energy Factors and critical elements regarding the district boundary. This research shows the applicability of the developed calculation methodology for cities in the design phase as well in the implementation phase of PEDs.

An energy-economic analysis of real-world hybrid building energy systems

A coordinated operation of decentralised micro-scale hybrid energy systems within a locally managed network such as a district or neighbourhood will play a significant role in the sector-coupled energy grid of the future. A quantitative analysis of the effects of the primary energy factors, energy conversion efficiencies, load profiles, and control strategies on their energy-economic balance can aid in identifying important trends concerning their deployment within such a network. In this contribution, an analysis of the operational data from five energy laboratories in the trinational Upper-Rhine region is evaluated and a comparison to a conventional reference system is presented. Ten exemplary data-sets representing typical operation conditions for the laboratories in different seasons and the latest information on their national energy strategies are used to evaluate the primary energy consumption, CO2 emissions, and demand-related costs. Various conclusions on the ecologic and economic feasibility of hybrid building energy systems are drawn to provide a toe-hold to the engineering community in their planning and development.

Method for determining the mass of evaporated water during thermal regulation in artificial agroecosystems

We noted the need for the use of digital technologies in crop production, i.e. we need to develop a special software. As we know any software implies that processes and functions are presented in an analytical form. Photosynthesis most efficiently (at the maximum rate) proceeds at a certain temperature, which is provided by thermoregulation using a self-organizing process of evaporative cooling (SOPEC). This process accounts for more than 90% of all water consumed by the plant. It is noted that the water needs of a plant will be determined by the SOPEC, since the relationship between the main energy factors – photosynthesis and thermoregulation – is reduced to the SOPEC functioning. The analytical determination of the mass of evaporated water plays a key role in the development of a digital moisture supply system and its software. The derivation of the analytical expression is based on the determination of the thermal component of light radiation energy by the method of graphical integration of the spectral distribution of the intensity of this radiation. The obtained expression allowed determining the mass of the evaporated liquid during thermoregulation. The result obtained was verified experimentally by taking the calculated value of the evaporation mass and comparing it with the experimental results. A test showed that the experimental weight slightly, i.e. by 4%, differs from the calculated weight.

Miranti

This research was conducted in Giri Purno Village, Rimbo Ilir District, Tebo Regency. The location of the research will be carried out in Giri Purno Village, Rimbo Ilir District, Tebo Regency. This location was chosen "purposively" that is intentionally. Considering the condition of the area which shows the low level of women's participation in the development of Giri Purno Village in terms of village consultations, formulation, planning and implementation of development. The method used in this study is a descriptive method with a qualitative approach, which intends to find out and get an overview of the problems that occur at a certain place and time. Forms of Women's Participation in the Development Process of Giri Purno Village, Rimbo Ilir District, include: 1. Non-Physical Participation (Ideas / Thoughts) and 2. Participation in the Form of Energy. Factors Encouraging Women's Participation in the Giri Purno Village Development Process: Awareness / Willing Factors, Educational Factors, Income factor / Income. The inhibiting factors for women's participation in the development of Giri Purno Village include the busyness of women, lack of communication and external factors, namely the government leadership factor.

A Critical Perspective on Positive Energy Districts in Climatically Favoured Regions: An Open-Source Modelling Approach Disclosing Implications and Possibilities

Urban areas have been responsible for the majority of the European Union (EU)-wide primary energy demand and CO2 emissions. To address this issue, the European Union introduced the concept of Positive Energy Districts (PEDs). PEDs are required to have an annual positive primary energy balance. However, if directly addressed in the literature, this energy balance only includes annually fixed primary energy factors and often neglects grid impacts. To bridge this gap, this work proposes a mathematical optimisation approach for PEDs, working towards an open-source model. The model’s main novelty is an hourly primary energy balance constraint. The performed case study on the island La Palma for both an urban and a rural neighbourhood show that the PED concept has a higher net present value (NPV) than solely buying electricity from the grid in all feasible cases. Depending on the space available for PV installations, the NPV increases between 29 and 31% and 25–27% for the rural and urban PED scenarios, respectively. However, in the scenarios with reduced grid impact, the NPV decreases due to the expensive battery installations. Comparing the significantly fossil-based electricity grid mix of La Palma with the renewable-based one of El Hierro shows that the primary energy-based optimisation has more room for flexibility in the high renewable mix. While the dynamic primary energy balance constraint appears promising for operational optimisation, the allocation of correct primary energy factors is crucial.

Novel HMO-Glasses with Sb2O3 and TeO2 for Nuclear Radiation Shielding Purposes: A Comparative Analysis with Traditional and Novel Shields

The radiation shielding characteristics of samples from two TeO2 and Sb2O3-based basic glass groups were investigated in this research. TeO2 and Sb2O3-based glasses were determined in the research as six samples with a composition of 10WO3-(x)MoO3-(90 − x)(TeO2/Sb2O3) (x = 10, 20, 30). A general purpose MCNPX Monte Carlo code and Phy-X/PSD platform were used to estimate the radiation shielding characteristics. Accordingly, the linear and mass attenuation coefficients, half value layer, mean free path, variation of the effective atomic number with photon energy, exposure and built-up energy factors, and effective removal cross-section values were determined. It was determined that the results that were produced using the two different techniques were consistent. Based on the collected data, the most remarkable findings were found to be associated with the sample classified as T80 (10WO3 + 10MoO3 + 80TeO2). The current study showed that material density was as equally important as composition in modifying radiation shielding characteristics. With the T80 sample with the greatest density (5.61 g/cm3) achieving the best results. Additionally, the acquired findings were compared to the radiation shielding characteristics of various glass and concrete materials. Increasing the quantity of MoO3 additive, a known heavy metal oxide, in these TeO2 and Sb2O3-based glasses may have a detrimental impact on the change in radiation shielding characteristics.

CO2 emission allowances and their interacion with economic and energy factors in the European Union

Analysis of emission allowances prices has important environmental and political connotations. This article aimed to identifying the possible variables that may influence their behaviour and studied their relationship with fundamental factors: energy (Brent petroleum, Gas, Coal) and economy (Industrial Production Index, Baltic Dry Index, Purchasing Managers Index). With the objective of analyzing possible mutual interactions, Multivariate VAR or Error Correction Models (VECM), were applied. The information analysed derived from different sources (World Bank, Sendeco2 and various financial websites). The results obtained showed, not only the influence of past prices on the emission allowances actual price, but also the interaction with energetic and economic variables. Highlights Estimation of time series interrelations through VAR models. There is relationship of the emission allowances price with their past values. The energy variables are factors important to also explain the behavior of the emission allowances price. The economic variables are hardly significant except for the Dry Baltic Index.

Minimization of energy efficiency barriers in the context of optimization of management decisions in the process of sustainable development

The object of research is the socio­economic model of the country in terms of energy efficiency factors in the process of economic development. The author has adapted the taxonomy of barriers and identified a new group of barriers inherent in the socio­economic models of countries with economies in transition. Achieving the goals of sustainable development is possible by achieving overall energy efficiency, which is provided by the implemented innovative energy technologies. The ability of the studied subjects to perceive and promote innovative energy technologies is determined by the level of their economic development. When building the concept of energy efficient management, the studied subjects should take into account the exhaustion of primary resources against the background of growing needs. One of Harrington's logical functions was used to determine the level of economic development of the studied subjects. In the indicators of the particular desirability of Harrington's logical function, indicators from 0.37 to 0.8 are the potential for development, currently unrealized in the studied subjects, which is the path to sustainable development. According to certain levels of private preferences, economic agents are given recommendations on the economic feasibility of introducing innovative energy technologies. At the same time, the research process involved the identification and localization of energy efficiency barriers in the studied subjects, which expanded the analytical opportunities in terms of providing practical recommendations. Such recommendations, combined with the private preferences of the studied subjects, allowed to formulate a conceptual scheme to increase the efficiency of energy resources of economic development management. The author proposes measures: scaling of grant financing, decentralization of energy sources, introduction of knowledge, cooperation of communities and in the community, development of entrepreneurship and greening of the environment. Directions strengthen the motivation of management decisions in the context of the effective impact of energy factors on the dynamics of economic development in modern conditions and can be used in the development of current and strategic plans and programs.