Impact Of Different Sources Research Articles

Impact of Different Sources of Anthropogenic Pollution on the Structure and Distribution of Antarctic Marine Meiofauna Communities

Impact of Different Sources of Anthropogenic Pollution on the Structure and Distribution of Antarctic Marine Meiofauna Communities

Unpredictable benefits of social information can lead to the evolution of individual differences in social learning

Human ecological success is often attributed to our capacity for social learning, which facilitates the spread of adaptive behaviours through populations. All humans rely on social learning to acquire culture, but there is substantial variation across societies, between individuals and over developmental time. However, it is unclear why these differences exist. Here, we present an evolutionary model showing that individual variation in social learning can emerge if the benefits of social learning are unpredictable. Unpredictability selects for flexible developmental programmes that allow individuals to update their reliance on social learning based on previous experiences. This developmental flexibility, in turn, causes some individuals in a population to end up consistently relying more heavily on social learning than others. We demonstrate this core evolutionary mechanism across three scenarios of increasing complexity, investigating the impact of different sources of uncertainty about the usefulness of social learning. Our results show how evolution can shape how individuals learn to learn from others, with potentially profound effects on cultural diversity.

Effect of Different Sources and Levels of Sulphur in Sesame on Yield, Nutrient Uptake and Soil Fertility in Acid Alfisols of Odisha, India

Aims: To examine the impact of different sources and levels of Sulphur on yield and oil content of sesame in acid Alfisols of Dhenkanal district of Odisha. Study Design: Randomized Block Design with three replications. Place and Duration of Study: During 2018 and 2019, this experiment was carried out at the Odisha University of Agriculture and Technology's Regional Research and Technology Transfer Station, which is located in Mahisapat, Dhenkanal district, Mid Central Table Land Zone, Odisha. Methodology: The treatments were T1- STBFR (S control), T2- STBFR + 30 kg ha-1 S from Ammonium Phosphate Sulphate, T3- STBFR + 40 kg ha-1 S from Ammonium Phosphate Sulphate, T4- STBFR + 30 kg ha-1 S from Gypsum, T5- STBFR + 40 kg ha-1 S from Gypsum, T6- STBFR + 30 kg ha-1 S from SSP, T7- STBFR + 40 kg ha-1 S from SSP. Results: Among seven treatments, T7 (STBFR along with 40 kg ha-1 S from SSP) was superior among all the sources and doses w.r.t. yield components and yield. The quality parameters like oil content under different sulphur fertilization was found to be maximum with STBFR along with 40 kg ha-1 S from SSP. Highest total nutrient uptake in terms of N, P, K and S of 55, 26, 37 and 5 kg/ha was recorded with the same treatment. Conclusion: Sulphur fertilization (T7) in the acid Alfisols of Odisha exhibited improved yield, oil content and nutrient uptake in sesame.

Impact of Different Sources of Phosphorus and Sulphur Levels on Growth, Yield Attributes and Performance of Chickpea under Light Textured Soil

Impact of Different Sources of Phosphorus and Sulphur Levels on Growth, Yield Attributes and Performance of Chickpea under Light Textured Soil

Impact of Sources of Damping On the Fragility Estimates of Wind Turbine Towers

Abstract Fragility estimates in wind turbine towers have been investigated but the the effect of damping on fragility has not been studied. While damping can often be small, it can come from different sources for a wind turbine. This paper demonstrates that even for small levels of equivalent viscous damping, a combination of sources can have a significant impact on the estimate of the fragility of a wind turbine in operational conditions. The widely studied 5MW reference wind turbine is considered for this study. The fragility analysis is performed considering the tower fore-aft displacement and acceleration responses. The impact of different sources of damping on fragility is estimated and ranked to qualitatively understand the impact of damping on the lifetime performance of the tower and develop approximate estimates of their quantitative changes.

Impact of Different Sources and Levels of Biochar on Maize Growth and Yield in a Vertisol

Biochar preparation is one of the beneficial technologies for crop residue management. The production and use of biochar have many opportunities for soil improvement and agricultural productivity. A field experiment was laid out in Factorial RBD, to assess the potential effect of biochar derived from maize cob rind, coconut shell and Prosopis sps on growth and yield of maize grown in Kharif season 2022. Treatments comprised of first factor as biochar sources viz., maize cob rind biochar, Prosopis sps biochar and coconut shell biochar, second factor as application rates viz., 7.5, 10 and 15 t ha-1 along with RPP without FYM, RPP and absolute control with three replications. Among the different biochar sources PSB recorded significantly higher total dry matter (188.21 g plant-1), grain weight per cob (174.44 g cob-1), grain yield (59.60 q ha-1) and Stover yield (81.22 q ha-1). Among the different rates of biochar application, significantly higher total dry matter (196.00 g plant-1), grain weight per cob (183.02 g cob-1), grain yield (57.55 q ha-1), stover yield (88.94) were recorded with biochars application of 15 t ha-1. However, lower values were recorded in absolute control. Among the Interaction effect between the sources and rate of biochar application was found to be non- significant with yield and soil parameters. Therefore, effect of biochar on the availability of soil nutrients is associated with the nature of the biochar feedstock, the rate of application and the soil characteristics.

The effect of capital structure on the financial sustainability of microfinance institutions: A meta‐analysis

AbstractConsidering the trend toward microfinance institutions (MFIs) commercialization that fundamentally reshapes their capital structure, this meta‐analysis, by synthesizing data from a wide range of studies, aims to investigate the impact of different sources of finance on the financial sustainability of MFIs and determine the optimal order in which these sources should be utilized. In this study, 166 effect sizes were obtained from 64 studies. Overall, the findings indicate that equity and deposit financing enhance financial sustainability positively, whereas debt and donation financing exhibit an inverse relationship. However, variations exist based on the MFI charters. While equity financing adversely affects the financial sustainability of MFI banks, it also exerts positive effects on other types of MFIs. Similarly, deposit financing negatively affected MFI NGOs. Regarding financial sustainability proxies, debt and equity financing affect financial self‐sufficiency (FSS) and operating self‐sufficiency (OSS), unlike donation and deposit financing. Equity financing has a positive effect on OSS but a negative effect on FSS. In contrast, debt financing shows the opposite trend. The meta‐regression further reveals that, as capital structure variables, the sources of finance do not significantly explain the variance in MFIs' FSS but do so for OSS. These findings have implications for managers and for future research.

Subsidies and the income inequality in the Hungarian wine sector

The paper investigates the impact of different sources of income on wine farm total income inequality in Hungary using Farm Accountancy Data Network data for the period 2013-2019. The decomposition of the Gini coefficient is applied to focus on the impact of the Common Agricultural Policy (CAP) shift from market to government budgetary support on wine farm total income inequality. Off-farm income has a rather stable impact on wine farm total income inequality. CAP Pillar 1 subsidies have remained more important than CAP Pillar 2 subsidies, both in the structure of wine farm total income and in the reduction of wine farm total income inequality. The most striking finding is regarding a shift in wine farm market income from a negative (losses) to a positive (profit) value and its increasing role in wine farm total income inequalities. The 20% of the largest wine farms created from almost 90% to less than 80% of wine farm total incomes between 2013 and 2019, but during the same period their participation in CAP subsidy payments was reduced much more from more than 80% to around 60%. Subsidies from Pillars 1 and 2 were reduced, and wine market income increased wine farm total income inequality, while it remained constant for off-farm income. The wine farm market income has driven wine farm total income inequalities. This might strengthen because of the ongoing market selection process with the exit of less efficient and loss-making wine farms and the increasing role of surviving profitable wine farms. This market selection process can be related to managerial, entrepreneurial, and innovation activities based on the differentiation and segmentation of wine farm products and their market incomes.

Nutrient Content and Nutrient Uptake of Rice by The Impact of Inorganic, Organic, and Biological Sources of Nutrients in An Inceptisol Soil of Tamil Nadu

Using the rice variety ADT-37, a field experiment was conducted in the rabi season of 2023 in Tamil Nadu. The scope of the study is to find out the impact of different sources of nutrients on nutrient content and uptake of rice. Most of the previous research work has combined inorganic and organic sources, or inorganic alone or organic alone or anyone with biological. Here we have included inorganic, organic and biological sources of nutrients. The experiment included of nine treatments viz., T1 – Control, T2 - 100% RDF, T3 - 125% RDF , T4 - 100% RDF + Press mud @ 10 t ha-1 + 2% Zinc Solubilizing Bacteria, T5 – 100% RDF + Vermicompost @ 6 t ha-1 + 2% Zinc Solubilizing Bacteria, T6 – 100% RDF + Coirpith Compost @ 6 t ha-1 + 2% Zinc Solubilizing Bacteria, T7 – 125% RDF + Press mud @ 10 t ha-1 + 2% Zinc Solubilizing Bacteria, T8 – 125% RDF + Vermicompost @ 6 t ha-1 + 2% Zinc Solubilizing Bacteria, T9 – 125% RDF + Coirpith Compost @ 6 t ha-1 + 2% Zinc Solubilizing Bacteria. The result concluded that 125% RDF + Vermicompost @ 6 t ha-1 + 2% Zinc Solubilizing Bacteria (T8) resulted maximum values in nutrient content and significantly higher in nutrient uptake values.

Firm survival and innovation: direct and indirect effects of knowledge for SMEs

ABSTRACT This paper explores the effects of innovation on firm survival by using data from a representative survey of small and medium manufacturing firms in the province of Salerno, Italy. We innovate upon the literature by (a) comparing the impact of different sources of internal and external knowledge (including universities) on the probability of firm survival; (b) assessing the mediating impact of the human capital of workers and entrepreneurs on learning from these knowledge sources. Finally, we measure the impact of different types of innovation on firm survival. Our evidence upholds the link between innovation and firm survival, particularly for product and organisational innovation. Results regarding the impact of different sources of knowledge highlight the roles of employee training, the human capital of entrepreneurs and workers and the productivity of university departments providing relevant knowledge. Other elements of external knowledge, such as proximity to the University of Salerno or being in the city of Salerno, are significant facilitators of survival only if mediated through high levels of the human capital of entrepreneurs and workers.

Impact of epistemic and aleatory uncertainties on the seismic reliability assessment of existing structures

Seismic reliability assessment of structural systems is commonly done via the convolution of seismic hazard and structural fragility to get resulting failure rate, and later compute seismic reliability index. Within this frame, many uncertainty sources have to be handled by the risk analyst, who is asked to make some reasonable assumptions in order to carry out his/her seismic safety quantification. However, slight changes in the definition of input parameters and/or the use of different empirical or analytical models can strongly impact the final reliability outcomes. The present work aims therefore to investigate the impact of different sources of uncertainties by comparing together key parameters to be defined in both hazard and fragility analysis, considering a case-study represented by an existing multi-span steel–concrete composite bridge to better understand which of these sources is more impacting on the final estimates. Results show how uncertainties associated to hazard and fragility are as a whole of the same order of magnitude and thus how both uncertainty sources have to be properly considered. In addition, a detailed sensitivity analysis was carried out for ranking the uncertainty sources in relation to their impact on the overall reliability index dispersion. Results showed that the choice of a suitable Ground Motion Prediction Equation (GMPE) model, the non-linear modelling technique and the number of the accelerometric records adopted for the structural analysis seem to be the factors that mostly contribute to the seismic reliability index variability, representing the uncertainty related to these parameters the majority of the overall reliability index dispersion.

Making sense of uncertainty: An application to the Scandinavian banking sector

AbstractWe study the impact of different sources of global, regional and local uncertainty on the seven largest Scandinavian banks over the period 2005–2018. Using a spillover approach and network analysis, we find that Swedish banks are the main source of contagion in the region and spillovers tend to increase in times of heightened uncertainty. Global economic policy uncertainty, global financial uncertainty and local housing market uncertainty affect the Scandinavian banking sector the most. By contrast, geopolitical risk spillovers are limited.

Impact of different sources of precursors on an ozone pollution outbreak over Europe analysed with IASI+GOME2 multispectral satellite observations and model simulations

Abstract. We examine the impact of different sources of ozone precursors on the daily evolution of successive ozone pollution outbreaks across Europe in July 2017 by using a multispectral satellite approach called IASI+GOME2 and a tropospheric chemistry reanalysis named TCR-2. IASI+GOME2, combining IASI (Infrared Atmospheric Sounding Interferometer) and GOME-2 (Global Ozone Monitoring Experiment-2) measurements respectively in the infrared and the ultraviolet, allows the observation of the daily horizontal distribution of ozone in the lowermost troposphere (defined here as the atmospheric layer between the surface and 3 km above sea level). IASI+GOME2 observations show a fair capacity to depict near-surface ozone evolution as compared to surface measurements from 188 European stations for the period 15–27 July 2017. At the beginning of this event (on 16 July), an ozone outbreak is initially formed over the Iberian Peninsula likely linked with high temperature-induced enhancements of biogenic volatile organic compound concentrations and collocated anthropogenic emissions. In the following days, the ozone plume splits into two branches, one being transported eastward across the western Mediterranean and Italy and the other one over western and Central Europe. The southern branch encounters ozone precursors emitted over the Balkan Peninsula by wildfires along the coast of the Adriatic Sea and biogenic sources in the inland region of the peninsula. Ozone concentrations of the northern plume are enhanced by photochemical production associated with anthropogenic sources of ozone precursors over Central Europe and by mixing with an ozone plume arriving from the North Sea that was originally produced over North America. Finally, both ozone branches are transported eastwards and mix gradually as they reach the northern coast of the Black Sea. There, emissions from agricultural fires after harvesting clearly favour photochemical production of ozone within the pollution plume, which is advected eastwards in the following days. Based on satellite analysis, this paper shows the interplay of various ozone precursor sources to sustain a 2-week-long ozone pollution event over different parts of Europe.

Impact of carbon emissions sources on life expectancy in Asia and the Pacific region

AbstractThis study aligns with the 2030 United Nations Sustainable Development Goals 3 and 11, which aim to “ensure healthy lives and promote well‐being for all at all ages” and “make cities and human settlements inclusive, safe, resilient, and sustainable”. The study objectives are to (i) explore the impact of different sources of carbon emissions on life expectancy; (ii) evaluate if the impact differs across income groups, and (iii) determine if life expectancy is persistent. It contributes to the health‐environment literature but differs from two standpoints. First, it uses two essential sources of carbon emissions: liquid and solid fuels. Second, it engages robust analyses comprising the full sample and sub‐samples of income groups to further interrogate this intrinsic relationship. For this purpose, an unbalanced sample of 36 countries from Asia and the Pacific region (2005–2010) is used, and for robust analyses, three econometric methods: bootstrap ordinary least squares (BOLS), instrumental variables (IV), and system generalized method of moments (GMM) are implemented. Empirical results reveal that: (1) liquid and solid fuel emissions exert significant negative outcomes, (2) liquid fuel emissions exhibit the most adverse effect, (3) life expectancy is persistent, and (4) impact of liquid and solid fuel emissions on life expectancy across the income groups is diverse. These findings suggest that the management authorities of Asia and the Pacific region need to devise prudent and effective policies concerning human health and carbon emissions while allocating sufficient budget to the health sector to rescue more lives and, thereby, lengthen the life expectancy in the region.

Written Corrective Feedback in An ESL Malaysian Primary Classroom: Teachers’ Beliefs and Practices

Written corrective feedback (WCF) has long been debated in language learning, with questions raised about its efficacy in the classroom. The use of WCF is important in the process of language learning since it benefits both educators and learners. This study aims to investigate the types of WCF implemented in an English primary classroom in Selangor, Malaysia, and to explore the beliefs and practices of 6 English teachers and 30 students towards WCF. Data was collected through a focus group discussion and document analysis. The study found that WCF served as a useful guideline for students to improve their writing skills and motivated them to excel, while also helping teachers to enhance their pedagogy. However, there were both matches and mismatches between teachers' beliefs and their actual WCF practices, particularly regarding the types of feedback provided. While teachers' beliefs were congruent with the focus and provision of feedback, there were striking incongruences regarding the types of feedback provided. This study contributes to the theory and practice of WCF in a primary ESL classroom context. It also offers insights for educators on how to effectively implement WCF in their teaching practices. Further research could look into the impact of different sources of WCF, such as peer and teacher–student conferencing, on the development of students’ writing skills, as this study only looked at teachers' provision of WCF.

Do wages squeeze markups? Sectoral-level evidence for Brazil, 2000–2013

This paper aims to empirically investigate the relationship between sectoral unit labor costs and markups for the Brazilian economy from 2000 to 2013. The underlying hypothesis is that labor costs are the sole determinant of a firm's competitiveness, a notion that has been widely accepted as conventional wisdom despite the lack of empirical evidence. Our analysis of the Brazilian economy does not provide evidence that the rises in wages squeezed markup rates over this period. Conversely, our study suggests that the compression of markups was influenced by a set of factors, including the costs of service sector inputs, stagnating labor productivity, and international trade pressure. Therefore, our study highlights the need for a more nuanced understanding of the relationship between unit labor costs and markups by shedding some light on the asymmetric impact of different sources of cost pressures and competition on sectoral markups in the Brazilian economy.

Variabilities in commercial cyanotoxin standards

AbstractCyanotoxin standards are commercially available from various suppliers. To investigate the potential impact of different sources on the comparability of cyanotoxin monitoring results among different methods and studies, this study evaluated the quality of 86 cyanotoxin standards from nine vendors via enzyme‐linked immunosorbent assay and liquid chromatography–tandem mass spectrometry. Substantial variabilities between vendors (up to 60%) and between lots (up to 98%) were observed for most of the standards. In addition, some of the microcystin standards had up to 11% of other microcystins as impurities. Compared to non‐certified analytical standards, certified standards showed much better agreement, with standards variations below 15% for all tested toxins. This study highlights the importance of developing and applying unified and certified standards for cyanotoxin analysis to improve the consistency and comparability of results. If different sources/lots of standards are used, they need to be cross‐checked to evaluate the potential impacts on results.

The impact of oil shocks from different sources on China's clean energy metal stocks: An analysis of spillover effects based on a time-varying perspective

In order to examine the impact of oil shocks from different sources on clean energy metals in China. This paper first obtains different sources of oil shocks, namely, oil supply shocks, oil demand shocks and oil risk shocks, and then uses the TVP-VAR model to investigate the time-varying effects and point-in-time impacts of different sources of oil shocks on Chinese clean energy metal stocks. The results show that, firstly, oil shocks from different sources have time-varying and heterogeneous effects on clean energy metal stocks. Compared to other oil shocks, the impact of oil demand shocks is the largest. Due to the different status and nature of different clean energy metals, the impact of different sources of oil shocks is different. At different time points of major events, the impact of different sources of oil shocks is different. Therefore, there is a need to focus on the impact of different events.

Anthropogenic Nitrate Contamination Impacts Nitrous Oxide Emissions and Microbial Communities in the Marchica Lagoon (Morocco)

Lagoon systems are often confined, and their waters are poorly renewed, which makes them vulnerable to pollutants’ accumulation. Here, the impact of different sources of anthropogenic contamination (domestic, urban, industrial, and agricultural) on the nitrate (NO3−) content, emission of the greenhouse gas nitrous oxide (N2O), abundance of total bacterial archaeal, nitrifying, and denitrifying communities, and diversity and composition of bacterial communities in the sediments of the RAMSAR-protected Marchica lagoon (Nador, Morocco) was investigated. Six lake sites differing in NO3− concentration were selected. Wastewater coming from industrial activities results in the greatest concentration of NO3− in sediments and emissions of N2O. Increased carbon to nitrogen content in sites near domestic activities resulted in an increase in the abundance of total bacterial and archaeal communities, as well as nitrification and denitrification genes, but low N2O emissions due to a greater presence of microorganisms involved in N2O production over those able to reduce N2O. Significant differences in bacterial community composition between sites were observed, with the NO3− content being the main driver of these changes. Increased NO3− content in the sampling sites significantly reduced bacterial diversity. Bacterial genera involved in the degradation of organic and inorganic pollutants and nitrous oxide reduction, such as Robiginitalea, Symbiobacterium, Bacillus, Fusibacter, Neptunomonas, Colwellia, and Alteromonas, were the most abundant in the lagoon. The results suggest that the type of anthropogenic contamination directly impacts the nitrate content in the sediments of the Marchica lagoon, which determines variations in nitrous oxide emissions, nitrogen-cycling gene abundances, and bacterial diversity.

Agricultural Pressures on the Quality of Ground and Surface Waters in Catchments of Artificial Reservoirs

Changes in nutrient concentrations in groundwater were investigated to determine the impact of agriculture on water quality in artificial lakes. The study covered three reservoirs in an agricultural area of Wielkopolska (central-western part of Poland). Assessing the agricultural impact required a network of piezometers around the reservoirs, used to determine the degree of groundwater pollution from nutrients supplied to the reservoirs. Moreover, the analysis covered the quality of water in streams flowing into the reservoirs, and in the reservoirs themselves. Field research was conducted every month of the growing season from March to November. The analysis covered land inclination, ground permeability, and soil type. Detailed objectives included: (1) assessment of the agricultural impact on the chemical parameters of ground and surface water quality, and (2) evaluation of the impact of different sources of agricultural pollution on water quality in artificial reservoirs in regards to their management. This study revealed high dynamics of nutrient concentrations, particularly for nitrates and phosphates, in groundwater and surface water. A significant effect of maize cultivation on an increase in nitrate concentrations in the groundwater of the catchment of the Przebędowo Reservoir was evidenced, as well as a substantial effect of the functioning of an animal farm on the quality of groundwaters in the catchment of the Lachotka Reservoir. The nutrient load of agricultural origin in the catchment of the Miedzichowo Reservoir was relatively low. Our study revealed elevated amounts of nutrients such as nitrogen and phosphorus, detected more frequently in groundwater than in running waters, which confirms our hypothesis of the importance of groundwater analysis in detecting the source of pollution of the studied lakes. High nutrient concentrations recorded in groundwater leached from arable fields were also observed in the summer period, failing to confirm the hypothesis that the greatest effect of factors would be related to the spring effect of arable fields on water quality (lack of compact vegetation cover, high water level, etc.). Our study also indicated a greater importance of the type of land use than lithology or permeability of deposits.