Analysis Of Economic Performance Research Articles

Economic system of developed socialism: Experience and lessons

The paper deals with the analysis of economic performance and economic policy of the USSR at the stage of “developed socialism”, fundamentals and characteristics of the Soviet economic model and mechanisms of its emerging crisis. Special attention is paid to the developed socialism phenomenon of Dutch disease and its influence on economic and political trends. Analysis has been done through the prism of the experience of the last 50 years of Russian economic development. Conclusions are drawn about the lessons learned by modern Russia from the experience of the 1970s.

Effects of insect meals on fish digestibility, blood parameters, and economic performance: a meta-analysis

Abstract This review examines the use of insect meal (IM) as a substitute for fishmeal (FM) in fish feeds within the past decade. While global interest in this alternative is growing, research on its effects on fish digestibility, blood parameters, and economic performance has been limited. Meta-analysis on the apparent digestibility coefficient revealed a negative effect summary on dry matter (−0.92) and crude lipid (−0.51), although the difference between the two groups was relatively minor. However, a positive effect summary was reported in the apparent digestibility of crude protein (0.12), suggesting a potential advantage in the utilization of protein by fish fed with IM-containing diets. Whereas meta-analysis on fish blood parameters demonstrates varying effects summary, necessitating further research. Analysis of economic performance revealed an overall better economic performance in the IM diet with an effect summary of −0.08 for feed cost and 0.00 for the economic profit index. Overall use of IM in aquafeed shows promise in improving feed quality and fish performance, potentially becoming a sustainable alternative to traditional FM. Recommendations include exploring IM’s impact on fish blood parameters through more investigations. Shifting focus from traditional measures to markers directly linked with fish health and immune response can provide more precise insights. Moreover, exploring various components of IM, such as lipids and functional elements like chitin, through simplified breakdown methods, can significantly enhance our comprehension of their nutritional value. Analyzing how each part influences fish health could pave the way for a sustainable and efficient alternative to FM in aquaculture.

ORSO: The Organizational Structure Ontology

ABSTRACT Organizational structure information is deeply embedded in the different functional activities of accounting. This paper presents ORSO (ORganizational Structure Ontology), an ontology for describing organizational structures that can be reasoned with as part of accounting applications, developed following the principles and guidelines of design science research. ORSO allows the representation of key organizational constructs to meet internal and external accounting needs, including financial reporting requirements, analysis of an organization’s governance structure, economic analysis of agent and group performance, the definition and monitoring of controls, and responding to political and social inquiries about agents and other needs. A prototype is presented that demonstrates three possible types of applications of ORSO systems: (1) analysis of organizational structures, (2) accounting analysis through the integrated use of Resource-Event-Agent (REA) transaction data and ORSO specifications, and (3) constraint definition and monitoring. Data Availability: Additional information is available from the authors. JEL Classifications: M4.

An Analysis of Foreign Capital Inflows, Institutional Quality and Economic Performance in SAARC Countries

This paper is interested in seeing and exploring the relationship between foreign capital inflows, the quality of domestic institutions, and economic performance. The paper focuses on SAARC economies and utilizes data from 1996-2020. Our results show that foreign aid and economic growth of SAARC countries were positive results from all four techniques we used in our study. For imports, we got positive results in pooled least squares, whereas we got a negative impact of imports on the economic growth of SAARC countries in the other three techniques. We got the negative and insignificant impact of FDI in pooled least squares and generalized least squares, whereas we got the positive and significant impact of FDI in two stages of least squares. We learned about the negative and significant effects of debt on the economic growth of SAARC countries through all four techniques we have used. Regarding remittances, we got mixed results. Regarding institutions, we got institutions' negative and considerable impact on the economic development of SAARC countries in all specifications. Our results have important policy implications for SAARC economies.

A comparative assessment of polymer-coated and non-coated urea in direct-seeded rice: agronomic, economic, and environmental performance and sensitivity analysis

The application of polymer-coated urea (PCU) to crops is likely restricted because the product’s capsules cause plastic pollution. Although conventional fertilizer use reduces plastic pollution, it may increase nitrogen (N) pollution owing to its lower N recovery than that of PCU. Therefore, we need to develop optimal N application methods to reduce both plastic and N pollution. Here, we aimed to (1) compare the agronomic, economic, and environmental outcomes of PCU application with those of conventional urea application and (2) provide quantitative targets for developing alternatives to PCU application in dry direct-seeded rice production. We developed a model incorporating yield, brown-rice protein content, farmer profit, and environmental damage cost due to N and polymer loss according to N fertilizer application. Data were collected from field experiments at a farm in Iwate, Japan, from 2020 to 2022. The average apparent N recovery was 0.43 for PCU and 0.37 for conventional urea. Despite the plastic damage cost, the estimated total environmental cost of PCU was lower than that of normal urea owing to the former’s higher N recovery. However, our ability to simulate plastic pollution is limited, as few of the environmental effects of microplastics are understood. If new N application methods with N recovery above 0.5 are developed, an N fertilization cost within $5 × 10–3 g N–1 can maintain the same benefit as that obtained here. This model can be used to evaluate the quantitative relationships among N recovery, benefits, and implementation costs of each candidate N application method.

Energy efficiency and indoor thermal comfort of railway carriages: Development of an innovative passenger-centric-control framework for HVAC systems

The railway sector's energy impact is increasing, and this trend is expected to persist over the next decade. Particularly, the energy consumption of Heating Ventilation, and Air Conditioning (HVAC) systems is significant among various services provided on board (30 % of total energy requirements) due to the rising attention to passengers' thermal comfort. In this framework, this research proposes an innovative method for enhancing indoor thermal comfort while also studying the associated energy consequences. It consists of an advanced passenger-centric-control framework for HVAC systems that prioritizes comfort, utilising optimized indoor air setpoints, which surpasses the rule-based control logic proposed by the existing standards. To analyse the proposed control framework, a novel mathematical model for the energy, economic, and environmental performance analyses of train HVAC systems, which can incorporate weather data associated with actual railway paths, is developed and validated. To prove the potential of the proposed method, a proof-of-concept analysis is conducted. In particular, for an existing railway coach operating in Italy, the standard and the innovative control logic are tested and compared. The results show an interesting thermal comfort hours increase (≃+1000 h) and energy savings (−27 % yearly), proving the benefits potentially achievable by adopting the proposed method.

An Economic Performance Improving and Analysis for Offshore Wind Farm-Based Islanded Green Hydrogen System

When offshore wind farms are connected to a hydrogen plant with dedicated transmission lines, for example, high-voltage direct current, the fluctuation of wind speed will influence the efficiency of the alkaline electrolyzer and deteriorate the techno-economic performance. To overcome this issue, firstly, an additional heating process is adopted to achieve insulation for the alkaline solution when power generated by wind farms is below the alkaline electrolyzer minimum power threshold, while the alkaline electrolyzer overload feature is used to generate hydrogen when wind power is at its peak. Then, a simplified piecewise model-based alkaline electrolyzer techno-economic analysis model is proposed. The improved economic performance of the islanded green hydrogen system with the proposed operation strategy is verified based on the wind speed data set simulation generated by the Weibull distribution. Lastly, the sensitivity of the total return on investment to wind speed parameters was investigated, and an islanded green hydrogen system capacity allocation based on the proposed analysis model was conducted. The simulation result shows the total energy utilization increased from 62.0768% to 72.5419%, and the return on investment increased from 5.1303%/month to 5.9581%/month when the proposed control strategy is adopted.

Thermodynamic and economic analysis of multi-generation system based on LNG-LAES integrating with air separation unit

LNG consumption is rising globally, releasing significant cold energy during regasification. Coupling LNG vaporization with liquid air energy storage (LAES) maximizes this cold energy recovery, enhancing LAES efficiency. However, current LNG-LAES systems face issues like insufficient high-grade cold energy use and high liquid air temperatures. LAES's inability to recover LNG cold energy during energy release necessitates cold storage fluid, increasing costs. Safety concerns also arise from LNG and air coexisting in the same heat exchanger, and LNG vaporization fluctuations can destabilize LAES operations. This study proposes a multi-generation system (LNG-LAES-ASU) incorporating an air separation unit (ASU) to address these challenges. The ASU recovers LNG cold energy during energy release, adapts to LNG vaporization fluctuations, and reduces ASU energy consumption. Energy, economic, and peak-shaving performance analyses show the system achieves a 91.07 % round-trip efficiency (RTE). The ASU's average energy consumption is 0.1356–0.1506 kWh/Nm³ O₂, much lower than a standalone ASU's 0.4 kWh/Nm³ O₂. Over 30 years, the system yields a net present value (NPV) of $56,111,291 and a dynamic payback period of 3.23 years. Its peak-shaving capacity is 2.47–2.57 times greater than LNG-LAES alone. This research offers valuable insights into efficient LNG cold energy utilization.

An Economic Analysis of Market Acceptance and Performance of Rice Varieties Grown in Northern Telangana Zone

This study aims to conduct an economic analysis of market acceptance and performance of rice varieties grown in the Northern Telangana Zone, where diverse rice cultivars face cultivation and marketing challenges. The objectives are to identify and document rice cultivars released by PJTSAU, study technological attributes preferred by stakeholders, and document constraints faced by stakeholders. A purposive sampling technique was used to select 90 farmers, 30 traders, and 30 consumers, totaling 150 participants. Data were collected using well-developed schedules and analyzed using tabular analysis, Rice Preference Index (RPI), Garrett ranking technique, and other suitable methods. The results showed that Telangana Sona (RNR 15048) is highly favored for its long grain size, high head rice recovery, and strong market demand, despite its susceptibility to stem borer and higher fertilizer requirements. Pranahitha (JGL 11727) is appreciated for its good rice quality but faces significant challenges, including high susceptibility to lodging, pests, and diseases, and lower germination rates. Kunaram Rice-1 (KNM 733) showed acceptable profitability but struggled with low market demand, poor grain quality, and higher water requirements. The study concludes that while Telangana Sona excels in market appeal and profitability, Pranahitha and Kunaram Rice-1 need targeted interventions to overcome their specific constraints. Enhancing pest resistance, improving grain quality, and reducing input requirements are essential for optimizing the potential of these varieties. Addressing these challenges through improved management practices and technology adoption can significantly benefit farmers and boost the marketability of these paddy varieties.

Technical and Enviro-economic Analysis of a 0.78 kWp PV System

Aim: To determine the technical, economic and environmental performance analysis of an installed PV backup system. Study Design: To attain this goal, analysis were performed using a freely available PVSyst 6.7.0 software tool. Economic evaluation was performed using respective present worth of individual component prices. Environmental performance comparison is made between the PV system and diesel generator when each is used as an independent backup system. Input in-situ measured data were determined, measured and keyed into the tool. Place and Duration of Study: The system is installed in an institutional building in a tropical climatic zone with coordinates 0.42 N and 35.03 E. The system was studied for a period of one year where data was collected and recorded for techno-enviroeconomic analysis. Methodology: The system consists of four PV modules rated at 0.78 KWp, charge controller and an inverter unit and battery bank, and is utilized as a power backup system to supply electricity whenever power failure occurs, which is frequent and real in Kenya. The techno-enviroeconomic performances analysis of the system were evaluated using the PVSyst software, a freely available design and analytical tool, where input data were measured and recorded at the site. Results: The performance analysis of the system showed that PV array efficiency of 13.24%, FF of 0.68, CF of 21.23%, and PR of 73.63% and generated electrical energy of 1092 kWh/year. The LCOE of PV electricity was 0.059 $/kWh, while total saving of CO2 emission in tons of CO2 was 9.0 tCO2 with LCE value of 331 gCO2/ kWh. Conclusion: Techno- enviroeconomic performance results of the studied PV system show that the system can contribute significantly to the mitigation of CO2 emission. This work also could be helpful for consumers and policy makers in the choice of renewable based or fossil based backup generation systems.

Thermodynamic and economic analysis of a deployable and scalable process to recover Monomer-Grade styrene from waste polystyrene

Less than 5% of polystyrene is recycled, motivating a search for energy efficient and economical methods for polystyrene recycling that can be deployed at scale. One option is chemical recycling, consisting of thermal depolymerization and purification to produce monomer-grade styrene (>99%) and other co-products. Thermal depolymerization and distillation are readily scalable, well-established technologies; however, to be considered practical, they must be thermodynamically efficient, economically feasible, and environmentally responsible. Accordingly, mass and energy balances of a pyrolysis reactor for thermal depolymerization and two distillation columns to separate styrene from α-methyl styrene, styrene dimer, toluene, and ethyl benzene co-products, were simulated using ASPEN to evaluate thermodynamic and economic feasibility. These simulations indicate that monomer-grade styrene can be recovered with energy inputs <10MJ/kg, comparable to the energy content of pyrolysis co-products. Thermodynamic sensitivity analysis indicates the scope to reduce these values and enhance the robustness of the predictions. A probabilistic economic analysis of multiple scenarios combined with detailed sensitivity analysis indicates that the cost for recycled styrene is approximately twice the historical market value of fossil-derived styrene when styrene costs are fixed at 15% of the total product cost or less than the historical value when feedstock costs are assumed to be zero. A Monte Carlo and Net Present Value-based economic performance analysis indicates that chemical recycling is economically viable for scenarios assuming realistic feedstock costs. Furthermore, the CO2 abatement cost is roughly $1.5 per ton of averted CO2, relative to a pyrolysis process system to produce fuels. As much as 60% of all polystyrene used today could be replaced by chemically recycled styrene, thus quantifying the potential benefits of this readily scalable approach.

Empirical analysis of economic performance and metal prices in Peru using svar and okun's law

Empirical analysis of economic performance and metal prices in Peru using svar and okun's law

The belt and road initiative: a spatial empirical analysis of economic performance in Central Asia and the South Caucasus

This article focuses on China’s FDIs and mutual trade with five Central Asian countries, three South Caucasus countries and Iran within the framework of the Belt and Road Initiative (BRI). The study examines how the interaction of mutual foreign trade and China’s FDIs affects longitudinal income changes in these countries and to what extent the empirical evidence can demonstrate the significance of China’s investments and trade on their economic growth. Employing panel-spatial econometric models, the study assesses whether a discernible increase in total income occurred before and after 2013, exploring potential spillover effects from the spatial neighborhoods. The findings from the panel regression model reveal that the labor stock and the amount of foreign direct investments from China do not exhibit a statistically significant effect on the economic growth of these countries. However, the BRI positively impacted these economies, primarily through enhanced trade with China rather than FDIs from China.

Drivers of Functioning or Discontinuation of Small-Scale Agri Entrepreneurship in Rural India

Youth in rural India have been witnessing a paradoxical situation of unemployment on one hand and untapped potential for transforming agriculture to agribusiness on the other. Realizing this, the Indian Council of Agricultural Research (ICAR) implemented the “Attracting and Retaining Youth in Agriculture (ARYA)” project since 2016-17. The impact of the project on the extent of livelihood was assessed by comparing ‘functional’ and ‘discontinued’ enterprises with primary data from 1033 units, spread across 25 states of the country. The study attempted to know whether functioning or discontinuation was anything to do with the choice of an enterprise or was it influenced by other factors. Nine types of activities were subjected to economic performance analysis. Despite passing through COVID pandemic, the functional units provided significantly higher quanta of income and employment compared to discontinued enterprises. Composite entrepreneurial factor index, a measure of entrepreneurial ability, was subjected to test the hypothesis that entrepreneurial competencies, age, education, landholding, livelihood-capital status and utilization of information-sources influence the performance of small-scale agri enterprises.

Energy, economic, and environmental (3E) performance assessment, comparison, and analysis of airport cargo terminal microgrid system under the islanded and grid-connected modes

Microgrids, which can be grid-connected or isolated, may experience dependability issues as a result of intermittent renewable energy. The implementation of a hybrid renewable energy system (HRES) could alleviate this problem but is still a challenging task because of its interference, uncertain, and unpredictable nature. Currently, the absence of comprehensive assessment impedes large-scale applications. In this study, a novel 3E assessment method-based complete quantitative assessment is suggested and inventively integrated with a newly proposed triangle evaluation scheme. Loads of an airport cargo terminal, which are used to test the assessment approach, are classified into critical and non-critical categories according to their necessity. The microgrid system flexibility is considered by the trade-off of non-critical loads. Results show that the assessment method is more intuitive in quantifying the system's performance. The Levelized Cost of Energy (LCOE) in the islanded mode is lower than the current electricity price (from 0.5407 to 0.5439 CNY/kWh) and the annual carbon emission is reduced to one-third of that in the grid-connected mode. Its flexibility can effectively reduce dependence on backup power generation, where the daily peak shedding increases from 217.88 kW to 555.04 kW and daily hours without charging from 6.7 h to 8.9 h. The carbon emission decreases by 32 % considering the impacts of the system flexibility. Besides, the critical distance exists when the LCOE exceeds the current market electricity price.

Energy, exergy, environmental and economic performance analysis and optimization of a novel CCHP system integrated with ammonia driven MCFC and solar energy

Energy, exergy, environmental and economic performance analysis and optimization of a novel CCHP system integrated with ammonia driven MCFC and solar energy

EU countries’ digital transformation, economic performance, and sustainability analysis

Digital transformation generates challenges and opportunities at the individual and organizational levels. Implementing digital technologies impacts all countries’ economic growth and orientation toward sustainability. This paper aims to evaluate the effects of digital transformation on the economic performance and sustainability of European Union (EU) countries. The paper employs artificial neural network analysis, structural equation modeling, and cluster analysis to investigate the relationships among digital transformation, economic performance, and sustainability. Economic performance is measured using GDP per capita, while SDG scores represent sustainability. The use of computers and the Internet in enterprises, the volume of e-commerce, and the percentages of implementing new digital technologies, such as cloud computing, Big Data, and the Internet of Things, illustrate digital transformation. The research findings reveal the extent of digital transformation in each country and the significant influence of digital transformation on economic performance and sustainability. The main drivers of digital transformation are the use of computers and the Internet in enterprises and e-commerce. However, new digital technologies exert increasingly noticeable effects, particularly in developed European countries. This study elucidates the profound implications of digital transformation on economic performance and sustainability. It underscores the pivotal role of digital technologies, especially in advanced European countries, in driving economic growth and sustainability. The results can be helpful to regulators in developing digitization strategies that underpin sustainable economic performance.

Economic particulate transport performance analysis of k-epsilon models in highly concentrated slurry through pipelines

The paper analyzed the economic transporting performance of k-epsilon turbulence models using the Eulerian two-fluid approach in transporting highly concentrated fine particulate slurry through horizontal pipelines using Kaushal et al. (2005) experimental data of glass beads slurry of 125 μm mean diameter for volumetric concentration ranging 30%–52% and flow velocity ranging 2–5 m/s. The primary components of economical slurry transport are Specific Energy consumption (SEC) and pressure drop; both have been examined in the performance of different κ-ϵ models and are yet to be unlighted on these parameters. The CFD model found the excellent performance of all k-epsilon models with slightly more effectiveness in the case of the Realizable κ-ϵ model. The analyzed and validated CFD model was subsequently used in examining the parameters of slurry flow, such as the secondary phase velocity, concentration distribution, and SEC analysis for the range of fine particles 125, 150, and 212 µm. The plotted contours from CFD are useful in visualizing slurry flow parameters at intermediates inlet values for slurry inlet flow velocity ranging 2–6 m/s and inlet volumetric concentration ranging 30%–55% for fine particles. Analysis revealed that the highly concentrated fine particles slurry transported at optimum volumetric concentration range of 40–45% are economical slurry transport.

Information on The Distribution Of Blood Donors Using GIS In Jayapura City (Case Study: UTD PMI Jayapura City)

The existence of UTD PMI Jayapura City is very helpful for the surrounding community in terms of health. People can also donate blood through the PMI clinic and get blood donors. Donors often have to queue to get their turn to register if they will donate blood at a blood donation event due to constraints in the health service process which is still carried out conventionally, namely by direct recording of potential donors. In addition, the absence of a computerized system to provide information regarding donor data remains a major problem, hampering blood donation services at PMI. The current system cannot produce clear and accurate data to help people assist. Quickly in case of an emergency. The PIECES method is used for reference in building several features in the system by conducting information, economic, security, efficiency, and service performance analysis to find weaknesses in the current system and offer suggestions for improvements to be made on newly built systems and using GIS as it can assist in the presentation of more interactive map information. The expected result of this research is to produce a system that can map the location of donors who have been divided based on their blood type so that the search process will be more efficient and can help search activities at PMI. Donor mapping in this system is also equipped with complete data from donors so that officers can find out the location of donors and can contact donors through existing data

Energetic, Economic and Environmental Performance Analysis of a Micro-Combined Cooling, Heating and Power (CCHP) System Based on Biomass Gasification

In this paper, the performance of an innovative micro-combined cooling, heating, and power (CCHP) system, based on an internal combustion engine fueled with syngas from woody biomass, is analyzed. In particular, a numerical model, which considers a direct coupling between the internal combustion engine and the gasifier as a novel aspect, was developed, validated and applied to three different case studies to perform an energetic, economic and environmental analysis. For each considered case, the CCHP system was equipped with a reversible electric air–water pump and a back-up boiler. The energy analysis shows that the user characterized by a high uniformity of the thermal load exploits the CCHP system in the optimal way as it allows for the highest thermal self-consumption rate. On the contrary, for the cases in which the thermal request is not uniform, a high electric surplus is recorded. In this case, the adoption of the heat pump allows to compensate for this disadvantage by recovering the electric surplus, thus achieving a thermal integration and CO2 emissions reduction of about 15.8% with respect to the case in which no heat pump is used. Overall, the results demonstrate the affordability of the biomass-based CCHP system, which is of increasing importance in this period of contingent international political crisis.