ASYMMETRICAL WATER IMPACT OF TWO-DIMENSIONAL WEDGES WITH ROLL ANGLE WITH MULTI-MATERIAL EULERIAN FORMULATION

A hydrodynamic study on the asymmetrical water impact of two-dimensional wedges with roll angle is presented. The slam induced loads on the wedges entering calm water with both vertical and horizontal velocities are predicted based on the explicit finite element method. The effects of the horizontal impact velocity and the roll angle are investigated through the predicted results of pressure distribution, pressure variation during the water entry and total impact force, which are also compared with analytical formulations and other numerical calculations. The present method gives reasonable predictions, compared to the numerical and analytical results.

Updated nationally determined contributions collectively raise ambition levels but need strengthening further to keep Paris goals within reach

By September 2021, 120 countries had submitted new or updated Nationally Determined Contributions (NDCs) to the UNFCCC in the context of the Paris Agreement. This study analyses the greenhouse gas (GHG) emissions and macroeconomic impacts of the new NDCs. The total impact of the updated NDCs of these countries on global emission levels by 2030 is an additional reduction of about 3.7 GtCO2e, compared to the previously submitted NDCs. This increases to about 4.1 GtCO2e, if also the lower projected emissions of the other countries are included. However, this total reduction needs to be four times greater to be consistent with keeping global temperature increase to well below 2 °C, and even eight times greater for 1.5 °C. Seven G20 economies have pledged stronger emission reduction targets for 2030 in their updated NDCs, leading to additional aggregated GHG emission reductions of about 3.1 GtCO2e, compared to those in the previous NDCs. The socio-economic impacts of the updated NDCs are limited in major economies, while structural shifts occur away from fossil fuel supply sectors and towards renewable electricity. However, two G20 economies have submitted new targets that will lead to an increase in emissions of about 0.3 GtCO2e, compared to their previous NDCs. The updated NDCs of non-G20 economies contain further net reductions. We conclude that countries should strongly increase the ambition levels of their updated NDC submissions to keep the climate goals of the Paris Agreement within reach.

A Strategic Communication Framework

Decades of research on public communication campaigns has generated a large volume of insights that are often siloed and fragmented across many fields and topic areas, making it difficult for researchers and practitioners to distill these insights into an overarching framework. Further, most research and theory focus only on a select few of the factors that determine the total impact of communication campaigns. In this article, we present a general framework for understanding the effects of strategic communication campaigns. We define the driving force as all the efforts, contexts, and systems that advance the campaign’s goals, and the restraining force as those that restrict the campaign’s goals. The total impact of any driving or restraining force can be understood as the product of its reach, effect, and durability. Reach refers to the proportion of people in the target population that are exposed to the corresponding driving or restraining force. Effect refers to the size of the impact of that force, among those who are exposed. Durability refers to the extent to which the effect of that force lasts over time and/or resists opposing forces. We highlight how this framework can be used to distill, connect, and interpret large amounts of extant research and theory, how it can be used by practitioners to design future campaigns and diagnose the degree of success or failure of past campaigns, and how it can be used by researchers to design research programs and identify persisting knowledge gaps.

G-IRAE: a Generalised approach for linking the total Impact of invasion to species' Range, Abundance and per-unit Effects

The total impact of an alien species was conceptualised as the product of its range size, local abundance and per-unit effect in a seminal paper by Parker and colleagues in 1999, but a practical approach for estimating the three components has been lacking. Here, we generalise the impact formula and, through use of regression models, estimate the relationship between the three components of impact, an approach we term G-IRAE (Generalised Impact - Range size - Abundance - per-unit Effect). Moreover, we show that G-IRAE can also be applied to damage and management costs. We propose two methods for applying G-IRAE. The species-specific method computes the relationship for a given species across multiple invaded sites or regions, assuming a constant per-unit effect across the invaded area. The multi-species method combines data from multiple species across multiple sites or regions to calculate a per-unit effect for each species. While the species-specific method is more accurate, it requires a large amount of data for each species. The multi-species method is more easily applicable and data-parsimonious. We illustrate the multi-species method using data about money spent managing plant invasions in different biomes of South Africa. We found clear differences between species in terms of money spent per unit area invaded, with per-unit expenditures varying substantially between biomes for some species. G-IRAE offers a versatile and practical method which can be applied to many different types of data, to better understand and manage invasions.

Effects of Rail Freight Corridors in Low Population Regions

Impact analysis of the construction and commissioning of a rail freight infrastructure must contemplate the regional economic system in its entirety, since that impact extends beyond the direct contribution to the increase in production, and the consequent generation of income from capital and remuneration of labor incorporated in such activity. The objective of this research is to know the effects that a rail freight infrastructure produces in a region with a low population, such as Extremadura (Spain). For this purpose, the calculation of the total impact produced by the rail freight corridor on the regional economy of Extremadura has been made, which will correspond to the sum of the direct, indirect and induced impacts. For its determination, a simulation tool has been created from Input-Output tables that allow you to compare different impact levels depending on the intensity of the investments made, or the activity developed following the launch of the new rail corridor. The research concludes with the profitability of the action because for a planned investment of 160 M€ for 3 years in the freight rail corridor from Extremadura, every euro invested returns in more than 2 euros to the Extremadura’s productive system, creating more than 4100 jobs.

The Impact of Higher Education Institutions in Low-Density Territories

This article highlights the relevance of the location of HEIs in low-density territories in Portugal, using the Polytechnic Institute of Portalegre as a case study. Based on the American Council Education model and following a surveying approach to faculty, staff, and students, this research accounts for the total spending of incoming academics, other nonlocal university members and their visitors, that positively impacts regional development. A demand-side approach was followed so that indirect and induced effects could also be estimated. The main aim of this research paper is to quantify the total impact arising from the location of the Polytechnic in a given region, measured by economic and social indicators such as the financial return from public funds invested in the region, the number of jobs created, and the impact on the local gross domestic product. The results show an impact of more than EUR 17 million in the territory where the Polytechnic operates, representing 3.68% of the local GDP. The institution was also found to be the third major employer in the region, responsible for the creation of 471 jobs that account for 2.25% of the local economically active population.

Factors affecting the development of the Bioeconomy in Latvia

In the European Union, including Latvia, the development of the bioeconomy by exploiting the potential of research, innovation and knowledge transfer is considered to be the basis for economic growth. The research aims to assess the drivers of and barriers to bioeconomic development in Latvia and define actions facilitating the development of the national bioeconomy. The present research employed mostly SWOT analysis in combination with expert judgement. The research concluded that the overall trend in the following strengths of the bioeconomy: Research infrastructure and modern technical equipment for the development of the bioeconomic knowledge base (3S) and Vast regional coverage of and cooperation among leading research institutions in the field of bioeconomics (1S) was negative, as the total impact of the threats exceeded the total impact of the opportunities. However, the overall trend in the strength Extensive initial activities and the knowledge base for bioeconomic research (2S) was positive, as the total impact of the opportunities exceeded the total impact of the threats. The total impact of exogenous factors on the weaknesses in the development of the bioeconomy was positive; therefore, the total impact of exogenous factors tended to weaken the weaknesses. Since the largest positive impacts on endogenous factors were made by the following opportunities: Effective support for independent innovation projects implemented by large companies (3O) and Stimulation of innovation in the small and medium enterprise sector in active synergy with national research priorities and available funding (2IO), it is necessary to increase government and private sector funding for R&D in order to contribute to the development of the bioeconomy in Latvia. The availability of funding should be balanced and predictable in the long term to reduce the impact of the threat Public policies and insufficient and unpredictable funding for research and development hinder the development of bioeconomy industries and steady growth opportunities (2T). To encourage the business sector to invest in R&D, including in the bioeconomy industries, public support and various incentives for entrepreneurs are needed.

Ecological Forecasting of Industrial Dust Emissions: Problems and Solutions

The results of the study of the levels of atmospheric air pollution by solid particles with different approaches to the accounting of dust and the analysis of the sufficiency and validity of permissible emission standards are presented. On the example of an operating enterprise, taking into account the current inventory, a comparative analysis of the levels of exposure to solid chemicals and the sum of all dusts (TSP) was performed. It is established that the dust factor at the total emission, forms the values of the maximum concentrations 2 times more than the individual chemical components. The presented results confirm the need to review the existing approaches to the regulation of emissions of solid components, including the inclusion in the system of the assessment of the sufficiency of emissions by the criterion of the total impact of dust in general. A correctly estimated level of total dust exposure will allow to exclude an unacceptable level of exposure to solid industrial emissions at the initial stage of the formation of project and environmental documentation (NDV projects).

Life Cycle Assessment (LCA) of biobased packaging solutions for Extended Shelf-Life (ESL) milk

The dairy market is one of the most important sectors worldwide and milk packaging contributes to over one third of the global dairy packaging demand. The end-of-life of the disposable packages is a critical stage of their life cycle, as demonstrated by the fact that disposable bottles are one of the litter items that are most found on beach shores. The aim of this paper is to analyse the performance of Bio-plastic bottles compared to other alternatives currently in use in the milk packaging sector, using the Life Cycle Assessment (LCA) methodology. Bio-compostable plastic can be a powerful means to create a circular economy for disposable items. A PLA-based bottle is compared to a PET bottle, a HDPE bottle, a Multilayer carton and a Glass bottle. In the analysis, also secondary and tertiary packaging is included. The functional unit chosen is “the packaging needed to contain 1 litre of ESL milk and to guarantee a shelf life of 30 days”. Two sensitivity analysis are also performed in order to assess the influence of the end-of-life stage on the total impact. The results show that Bioplastic system has a better performance than fossil-based systems and Multilayer carton in the categories of Climate Change, Ozone Depletion, Human toxicity and Freshwater Eutrophication. The recycling scenario strongly changes the impact of the Glass packaging system in the considered categories.

Concordance between adolescents and parents on the Strengths and Difficulties Questionnaire: Analysis of an Australian nationally representative sample

Objective: Differences between adolescent self-reported and parent-reported emotional and behavioural difficulties may influence psychiatric epidemiological research. This study examined concordance between adolescents and their parents about mental health symptoms using the Strengths and Difficulties Questionnaire. Methods: The study comprised a randomly selected, nationally representative sample of adolescents aged 11–17 years who participated in the Second Australian Child and Adolescent Survey of Mental Health and Wellbeing ( N = 2967). Matched adolescent and parent responses across the five Strengths and Difficulties Questionnaire subscales (emotional problems, hyperactivity, peer problems, conduct problems and prosocial behaviour), as well as total difficulties and total impact scores were examined to estimate concordance. Concordance patterns were analysed by sex, after stratifying the sample by age group (younger adolescents: 11–14 years; older adolescents: 15–17 years). Results: Concordance was 86.7% for total difficulties, 77.5% for total impact and ranged from 82.4% to 94.3% across the five Strengths and Difficulties Questionnaire subscales. There were no differences in concordance between sexes on the total difficulties score. Older females were more likely to disagree with their parents about emotional problems compared to males of the same age. Younger males were more likely to disagree with their parents compared to same-aged females about peer problems, hyperactivity, conduct problems and prosocial skills, as well as the impact of their problems. Older males were more likely to disagree with their parents about their prosocial skills compared to older females. Conclusion: Overall, concordance between adolescents and parents on the Strengths and Difficulties Questionnaire was largely driven by the high proportion of respondents who reported having no problems. Discordance on a subscale increased as the prevalence of problems in a sex and age demographic subgroup increased. These findings highlight the need for a multi-informant approach to detect emotional and behavioural difficulties in adolescents, particularly when assessing the impact of symptoms, as this subscale had the lowest concordance.