Central Region Of Portugal Research Articles

Multispectral vineyard segmentation: A deep learning comparison study

Digital agriculture has evolved significantly over the last few years due to the technological developments in automation and computational intelligence applied to the agricultural sector, including vineyards which are a relevant crop in the Mediterranean region. In this work, a study is presented of semantic segmentation for vine detection in real-world vineyards by exploring state-of-the-art deep segmentation networks and conventional unsupervised methods. Camera data have been collected on vineyards using an Unmanned Aerial System (UAS) equipped with a dual imaging sensor payload, namely a high-definition RGB camera and a five-band multispectral and thermal camera. Extensive experiments using deep-segmentation networks and unsupervised methods have been performed on multimodal datasets representing four distinct vineyards located in the central region of Portugal. The reported results indicate that SegNet, U-Net, and ModSegNet have equivalent overall performance in vine segmentation. The results also show that multimodality slightly improves the performance of vine segmentation, but the NIR spectrum alone generally is sufficient on most of the datasets. Furthermore, results suggest that high-definition RGB images produce equivalent or higher performance than any lower resolution multispectral band combination. Lastly, Deep Learning (DL) networks have higher overall performance than classical methods. The code and dataset are publicly available on https://github.com/Cybonic/DL_vineyard_segmentation_study.git.

Effects of Grazing Indigenous Laying Hens on Soil Properties: Benefits and Challenges to Achieving Soil Fertility

Crop–livestock integration fosters a holistic view of the agricultural system, which is nowadays particularly relevant due to the rising environmental concerns. Laying hens can contribute to improvement of soil chemical properties, but their effects in soil fertility are not fully known. This study aimed to evaluate the effects of grazing laying hens on soil fertility. To meet this goal, we assessed the effects of indigenous laying hens in 22 soil parameters, including chemical, physical, and microbiological parameters, in two farms from the central region of Portugal: an organic horticultural field (A) and a conventional orchard (B). At farm A, the animals grazed during the dry period for 84 continuous days, at a density of 4 m2 per hen. At farm B, the animals grazed during the wet period, at a density of 3.50 m2 per hen, in two periods (34 + 33 days), with a 50 day break period in between grazing. The hens contributed to an increase in the extractable macronutrients phosphorus (P2O5) and potassium (K2O), mineral nitrogen (NH4+-N and NO3−-N), and exchangeable bases calcium (Ca2+) and magnesium (Mg2+) in both farms, making these central parameters to consider in their grazing management. At farm A, where soil disturbance is higher, the grazing did not affect soil moisture retention but positively affected soil dry bulk density and contributed to an increase in total aerobic bacteria and nitrogen-fixing bacteria abundances. At farm B, where the hens’ presence led to the understory eradication, soil moisture retention, total aerobic bacteria, nitrogen-fixing bacteria, and fungi abundances were negatively affected, while soil dry bulk density was unaffected. These results show that hens can significantly contribute to improve soil fertility, but more research is needed regarding their grazing management.

Life cycle assessment of shared and private use of automated and electric vehicles on interurban mobility

The future of road transportation systems faces fundamental changes concerning technological progress and business models. Automated and electric vehicles are coming into the market and evolving towards a service-based mobility system with promises to tackle energy and environmental issues in the mobility sector. Although recent studies have begun to explore the potential impact of shared and privately owned automated and electric vehicles (AEVs) mostly from an operational perspective, little is known about the life cycle impact of such future transport systems. To fill this gap, this paper aims to compare the life cycle environmental impacts of shared vs privately owned AEVs in a regional context. A life cycle assessment (LCA) approach is developed to appraise impact categories with a direct effect on human health, ecosystems, and resources availability. Given that automated vehicles are not yet being used massively, the LCA is applied to synthetic travel demand data to assess the characteristics of privately-owned AEVs and the results of an optimization model that determines the vehicle fleet and driving patterns of shared AEVs serving a regional case-study in the central region of Portugal. Two different vehicle seating capacities - one passenger (non-ridesharing) and four passengers (ridesharing) – are considered to evaluate shared mobility systems. Results show that shared mobility systems yield a potential reduction of up to 42% (with 4 passengers per vehicle) of the system’s environmental impacts compared to privately owned automated vehicles. Human toxicity, mineral resource scarcity, and marine and freshwater ecotoxicity are the impact categories with a higher potential of reduction.

What Is the Relationship between Lifestyle and Frailty Status? Data from the Portuguese Multicentre Descriptive Study.

This observational and descriptive study attempted, within the scope of the ModulEn Research Project, to determine associations between lifestyle-related variables and frailty involving 160 community-dwelling older adults aged between 65 and 80 years living in the Central Region of Portugal. Forty-three percent of the study participants were pre-frail and 18% were frail. More than 50% of the frail people had slight cognitive decline, and the frailty condition was more frequently observed in women. As the literature highlights, there is potential for greater reversibility in the pre-frailty condition. To contribute to this reversibility, it is necessary to resort to interventions that promote physical activity and cognitive stimulation, apply adequate eating habits, and/or encourage the adoption of an active and socially integrated lifestyle. A healthy lifestyle implies good sleep and eating habits, and correct metabolic control that allows for effective surveillance of dyslipidemia, diabetes, and blood pressure.

Production of Preserved Forage for Horses under Water Scarcity Conditions: A Case Study

The Mediterranean region is one of the areas most affected by climate change, which influences the production of forages. This has led producers to change from one to several forage cuttings, aiming to maintain crop productivity in increasingly water-scarce conditions. This study aimed to evaluate the nutrient content and productivity of forage produced for horses when subjected to variable water availability conditions at a Lusitano stud farm located in the central region of Portugal. The soil water content was evaluated throughout the growing season, using the gravimetric method, with soil samples collected every 15 days. Forage samples were collected from three grass cuttings (two for haylage and one for hay production), harvested from the same sward during the 2018/2019 growing season. The nutrient content of the forage samples was determined by chemical analysis. The global productivity throughout the crop-growing season was 8.3 t DM·ha−1, with the second harvest presenting the highest productivity (3.42 t DM·ha−1), corresponding to an adequate water supply, whereas the last cut, produced under water deficit conditions, presented the lowest productivity (2.1 t DM·ha−1). The estimated nutritive value by chemical composition analysis for both haylage and hay fell within the range reported in the literature for preserved forages for horses.

Avaliação do risco de desenvolver diabetes mellitus tipo 2 em uma unidade saúde familiar

It was intended to evaluate the risk of developing type 2 diabetes mellitus over a period of 10 years in the adult population of a Family Health Unit in the central region of Portugal. A descriptive-correlational, cross-sectional study was carried out in a probabilistic, simple random sample, consisting of 341 participants aged between 45 and 54 years, 54.3% female and 45.7% male. After obtaining authorizations and individual informed consent, data collection was carried out through a semi-structured interview. The risk assessment scale for developing type 2 diabetes mellitus (FINDRISC) was used. Statistical treatment was performed by computer using the Statistical Package for Social Science program, version 23 of 2016. 129 participants were identified with moderately high, high or very high risk of developing type 2 diabetes mellitus, and the participants with the highest risk are men, those living in rural areas, those taking anti-dyslipidemics, smokers and hypertensive patients. Participants who presented modifiable risk factors were made aware of the adoption of healthy behaviors, lifestyles and habits, highlighting the need to implement strategies that aim to reduce the effect of risk factors, thus enhancing the achievement of health gains in this sample.

Smoke emissions from the extreme wildfire events in central Portugal in October 2017

In the last decades, numerous large forest fires have been recorded in Portugal. On 15 and 16 October 2017, seven extreme wildfires events (EWEs) took place in the central region of Portugal. Aiming to contribute to the assessment of the smoke impact of these EWEs, this study estimates their atmospheric emissions using a bottom-up approach with high spatial and temporal resolution. To this end, fire data were used, such as ignition location and time, propagation, burned area, and fuel load and emission factors according to forest species. A particular fire – EWE in Lousã with a high fuel load – emitted ~50% of the sum of the emissions of the six other case studies. The spatial distribution of the EWE emissions indicates that fuel load is an important component of emissions estimation. The obtained results were compared with remote sensing data, showing good agreement in terms of total values. During these EWEs, particulate matter and carbon monoxide emissions were higher than Portuguese anthropogenic emissions in 2017. This approach contributes to the state of the art on forest fire emissions, reducing uncertainty and obtaining the best possible and detailed quantification of the temporal and spatial variability of EWE emissions.

Experiências e desafios de uma equipe de rua em Portugal com populações vulneráveis: estudo fenomenológico

To understand the experiences and challenges faced by professionals working on a street team in Portugal in caring for the vulnerable population from the phenomenological perspective of Alfred Schutz. Qualitative approach in the light of the theoretical framework of phenomenological Sociology, developed in a street team in the central region of Portugal from phenomenological interviews with five professionals in the months of June and July 2021. The interpretation of the results was analyzed through theoretical conceptions of Alfred Schutz's phenomenological sociology and related literature. Three categories emerged: Conflicts experienced by the street team; Frustration in the daily care provided by the street team; and, Limits in the social relationship with the vulnerable population. The street team in Portugal faces challenges in caring for the vulnerable population served,requiring team skills for conflict mediation combined with an understanding of the influences of relationships, in social action.

From co-design to the construction of a metaverse for the promotion of cultural heritage and tourism: the case of Amiais

Co-design is characterized as a key process so that researchers can count on the collaboration of those who are bearers of knowledge and wisdom of a certain subject, so that together they can work towards a common end. This paper focuses on the case study of Amiais, a small village located in the central region of Portugal in which a project is being developed that intends to replicate the village in the Second Life metaverse so that visitors can get to know the place virtually. To make this possible, several visits to the place were made and co-design sessions were developed so that there would be a participative and ethnographic proximity research. In this way, the inhabitants also became members of the research team, and their knowledge was central to the project. Thanks to the sharing of knowledge, experiences and stories, the contribution of these inhabitants will have an impact on the preservation and dissemination of the cultural heritage of Amiais. This article focuses on the two co-design sessions held by the project, which gave voice to the inhabitants of Amiais, making them also members of the team. The main objective of these co-design sessions was to create brainstorms with the purpose of sharing the knowledge and life experiences of those who live in the village. Thanks to the sessions, it was possible to recreate and share the cultural heritage of Amiais in the Second Life metaverse.

Effect of an Educational Nursing Intervention on the Mental Adjustment of Patients with Chronic Arterial Hypertension: An Interventional Study.

The objective of this analytical and interventional prospective quantitative study was to assess the effect of an educational intervention performed by nurses for mental adjustment to chronic disease in patients with hypertension. A convenience sample was studied, composed of 329 participants with chronic hypertension, followed in a primary healthcare unit in the Central Region of Portugal. Data collection was carried out by applying the Mental Adjustment to Disease Scale (MADS) before and 1 month after the educational nursing intervention between September 2017 and February 2018. Prior to the application of the educational intervention, 43.5% of the participants were classified as “unadjusted” in at least one of the subscales of MADS. After the educational intervention, 21.3% of the participants classified as “unadjusted” became “adjusted” in all MADS subscales. The success rate of the intervention varied from 26.9% (in the fatalism subscale) to 44.6% (for the anxious concern subscale). Participants were more likely to be mentally “unadjusted” to hypertension if they lived with other family members, had an active professional situation before the diagnosis of hypertension, still had an active professional situation now, were under 65 years old, had a shorter time to diagnosis (1–2 years), and measured blood pressure less regularly. The educational intervention performed by nurses is relevant for the mental adjustment of hypertensive patients, contributing to increased knowledge, as well as improvement in preventive and self-care practices, facilitating the experience of the health/disease transition process.

NOTCH3 mutations in a cohort of Portuguese patients within CADASIL spectrum phenotype

Cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL) is the most common inherited cerebral small vessel disease. It is caused by mutations in the NOTCH3 gene, which encodes a membranebound receptor protein with three main distinct functional domains. Thus far, several different NOTCH3 mutations, most of them cysteine altering variants, have been described and although they tend to cluster in certain exons, their distribution varies in different geographically populations. Therefore, in this study, we describe the mutation analysis of NOTCH3 gene in 24 Portuguese families with small vessel disease suspected to have CADASIL from the central region of Portugal. The genetic analysis revealed 15 different heterozygous variants, eight pathogenic cysteine altering variants, six cysteine sparing variants and one nonsense variant, located mainly in the exons 4, 8 and 11. Thus, in our population, the genetic testing should initially be focused on these exons. In addition, the genetic findings broaden the mutational and clinical spectrum of CADASIL related phenotype and provide additional evidences for genetic counseling and clinical management.

Prevalence of anisometropia in children and adolescents

Background: This research was developed to study the epidemiology of anisometropia. It aims to estimate the prevalence of anisometropia in Portuguese children and adolescents at various educational stages, studying its association with sociodemographic variables. Methods: Observational cross sectional study envolving 749 children and adolescents (from 3 to 16 years old) from the central region of Portugal. The refraction was performed with a paediatric, open field auto refractometer (PlusOptix), without cycloplegia and under binocular conditions, to determine the rate of anisometropia and its association with gender, study cycle and area of residence. Results: The prevalence of anisometropia in the studied sample was 6.1%, varying from 2.9% in pre-school education to 9.4% in the 3rd study cycle. Myopic anisometropia was the most prevalent and hyperopic and astigmatic anisometropia showed identical proportions of occurrence. No statistical differences were found between genders or between areas of residence regarding the rate of anisometropia. Regarding spherical equivalent anisometropia, there was a pattern of variation that increased with the cycle of studies (p = 0.012), with myopic anisometropia being the main contributor to this variation. Conclusions: This study found an increase in anisometropia with the educational stage. The high rate of anisometropia found in adolescents (9.4%) as well as the progressive increase in this rate throughout school progress (from 2.9% to 9.4%) suggests the need to extend the detection strategies of this condition beyond childhood.

Occurrence and Distribution of Fasciolosis in a Cohort of Ovine Livestock Restricted to a Mountain Plateau in Central Portugal.

Simple SummaryFasciola hepatica is a parasite that affects ruminants. This study evaluated the occurrence of fasciolosis in ovine livestock from central Portugal during a 2-year period. Positive animals were found in most locations and in both years (19.6% and 18.5% seropositive in the first year and second year, respectively). Correct anthelmintic treatment could further reduce egg elimination and pasture contamination.Fasciola hepatica is a parasite that is widespread in Europe, having been reported in ruminants of several European countries and causing an important economic impact. This study ascertained the occurrence and distribution of fasciolosis in Portuguese ovine livestock by assessing F. hepatica IgG antibodies in a cohort of confined sheep from a high-altitude region of central Portugal in a 2-year period. Positive animals were found in most locations and in both years, with 18 of the 92 animals (19.6% [95% confidence interval CI: 12.03–19.15]) and 17 of the same 92 animals (18.5% [95% CI: 11.15–27.93]) showing to be seropositive in the first year and second year, respectively (p = 0.85). Pasture contamination by F. hepatica eggs could be reduced by thorough anthelmintic treatments.

Building Compassionate Schools: Pilot Study of a Compassionate Mind Training Intervention to Promote Teachers’ Well-being

Mounting research has supported the beneficial effects of compassion-based interventions for improving psychosocial and physiological well-being and mental health. Teachers present a high risk of professional stress, which negatively impacts their mental health and professional performance. It is crucial to make compassion cultivation a focus in educational settings, supporting teachers in coping with the school context’s challenges, and promoting their mental well-being. This study aims to test the feasibility of the Compassionate Mind Training programme for Teachers (CMT-T), as well as to preliminary explore possible mechanisms of change. Participants were 31 teachers from one public school in the centre region of Portugal, who underwent the CMT-T, a six-module Compassionate Mind Training group intervention for teachers. Feasibility was assessed in six domains (acceptability, implementation, practicality, adaptation, integration, and preliminary effectiveness), using self-reports, overall programme assessment, attrition, attendance, and home practice. Using a pre-post within-subject design, changes were assessed in self-reported psychological distress, burnout, well-being, compassion, and self-criticism. Mediation analysis for repeated measures designs was used to explore mechanisms of change. The CMT-T was feasible in all the six domains. Participants revealed significant decreases in depression, stress, and fears of compassion to others, as well as significant increases in compassion to others, self-compassion, and compassion to others’ motivations and actions after the CMT-T intervention. When self-criticism was controlled, decreases in burnout and increases in satisfaction with professional life, and self-compassion, were also found. Fears of compassion for others mediated the impact of CMT-T on teachers’ burnout, and self-compassion mediated the intervention effect on psychological well-being. This pilot study provides evidence that CMT-T is feasible and may be effective in promoting teachers’ compassionate motivations, attributes, and actions towards others and themselves and improving their mental health and well-being. These promising findings warrant further investigation within a randomized controlled trial.

Prevalence of Antibodies to Toxoplasma gondii in Different Wild Bird Species Admitted to Rehabilitation Centres in Portugal.

Toxoplasma gondii is a worldwide zoonotic parasite. According to the “One Health” approach, studies on toxoplasmosis are essential since it affects humans and domestic and wild animals. In the present study, antibodies to T. gondii were determined in serum samples from 263 wild birds located in five wildlife rehabilitation centres in mainland Portugal by using the modified agglutination test (MAT) with a cut-off titre of 20. An overall seroprevalence of 36.5% (95% confidence interval [CI]: 30.7–42.6) was observed. For the first time, antibodies to T. gondii were detected in some avian species, including pallid swift (Apus pallidus) (33.3%), black-backed gull (Larus fuscus) (39.3%), European turtle-dove (Streptopelia turtur) (100%), bee-eater (Merops apiaster) (50.0%), carrion crow (Corvus corone) (33.3%), and Egyptian vulture (Neophron percnopterus) (100%), which expands the list of intermediate hosts of T. gondii. A lower seroprevalence was found in juvenile birds (31.9%) compared to adults (48.7%) (p = 0.016). The central region of Portugal was considered a risk factor for T. gondii infection in wild birds (odds ratio: 3.61; 95% CI: 1.09–11.91). This pioneer study calls attention to the need for further studies, to provide a clearer understanding of T. gondii epidemiology in Portugal, because it reflects wide dispersion of T. gondii oocysts in the environment.

MYOC Gene Sequencing Analysis in Primary Open-Angle Glaucoma Patients from the Centre Region of Portugal.

Primary open-angle glaucoma is the most frequent subtype of glaucoma. Relatives of primary open-angle glaucoma patients have an increased risk of developing the disease, suggesting a genetic predisposition to the disease. MYOC was the first primary open-angle glaucoma-causing gene identified. This study aimed to identify sequence variations in the MYOC gene that may be responsible for the phenotype in a group of primary open-angle glaucoma patients from the Centre Region of Portugal. The three coding exons and the proximal splicing junctions of the MYOC gene were studied using a PCR sequencingapproach in a group of 99 primary open-angle glaucoma patients. The sequencing analysis enabled the identification of 20 variants, including four in the promoter region, seven in the introns and nine in exons one and three, of which four were missense variants. Initially, all four missense sequence variations identified were considered candidates to glaucoma causing disease mutations. However, after literature review, only variant c.1334C>T (Ala445Val) remained as likely responsible for mild late-onset normal tension glaucoma. This is the first study performed in a group of primary open-angle glaucoma patients from the Centre Region of Portugal,contributing to the identification of one genetic variant in the MYOC gene and reinforcing the hypothesis that normal tension glaucomacould be also due to MYOC gene mutations.

The Impact of Crisis and Austerity on Long Term Care for Older People in Portugal – An Analysis Based on the Experiences of Social Workers in Private Institutions for Social Solidarity

In Portugal, long-term care (LTC) for older people rests mainly upon Private Institutions for Social Solidarity (IPSS). The debt crisis of 2008-2013 and the austerity policies that followed had a considerable impact on all sectors of the country’s economy and social services. How did this crisis and austerity impact long-term care for older people? We approach this question with a qualitative research using content analyzis, based on individual interviews of a geographically convenient sample (N = 20) with social work staff of IPSS providing social responses of LTC for older people (1 full-time social work staff per each institution), located at the Center Region of Portugal. The main themes revealed by the analyzis were: financing, human resources, partnerships and quality. The results show a strong impact at the level of financing, yet, a correspondent lower impact on the quality of the services. Also, some dynamics of innovation appear in issues of partnerships and human resources. Although the results and discussion are limited to a specific historical and geographical context, upon further research, they can be considered as implications of crisis and austerity on older people’s social services more broadly, and a reference point to compare with future social policies.

Cross-border cooperation to strengthen innovation and knowledge transfer: An Iberian case

This study seeks to find out the main achievements of a cross-border cooperation project (INESPO III) in terms of innovation and university-firm knowledge transfer in a region situated in the central region of Portugal and Castile and León, Spain. To achieve this aim, research of a qualitative and exploratory nature was chosen., that is, case study method. Data collection was based on seven interviews with several project actors, and content analysis was also used. Through interviews with project beneficiaries, empirical evidence suggests that this type of cooperation allows access to new sources of external knowledge, with the network benefiting globally from each partner’s type of specialization. This study makes an important contribution to the literature on cross-border cooperation by extending its field of research to knowledge transfer and innovation, analysing a project that has produced good results. It can be determinant for government institutions responsible for administering cross-border incentive systems, and for partner networks in drawing process of similar projects for benefit of their own regions, besides the clear academic interest in business cooperation networks. Final results and main contributions of the project are also presented.

Visitors’ behavioural intention towards an episode of air pollution: a segmentation analysis

ABSTRACT Despite the growing influence of air pollution on people’s behaviour, little attention has been given to visitors’ behavioural intentions towards air pollution episodes. Understanding visitors’ behaviours is crucial in developing effective marketing strategies and preventing damaging consequences for both visitors and destinations. This paper presents a segmentation analysis based on visitors’ behavioural intentions towards a hypothetical episode of air pollution, based on a visitor survey (N = 625) applied over the Central Region of Portugal. Two clusters with different behavioural intentions were obtained. Differences were found between groups regarding attitudes towards the environment, risk perceptions, travel behaviour and sociodemographic profile.

Disorders, Vulnerabilities and Resilience in the Supply Chain in Pandemic Times

The economic and social environment caused by the COVID-19 pandemic has brought additional pressure on supply chains because they now have more pressure to develop and adapt to a context of economic constraint. Delays in the supply chain can bring consequences such as the lack of food products by retailers, transporters and manufacturers. Thus, this study aims to examine the supply chain during the COVID-19 pandemic in small- and medium-sized food companies in the central region of Portugal, identifying potential problems and pointing out the respective solutions. For this purpose, the study uses a qualitative methodology through semi-structured interviews. It was found that small and medium-sized enterprises (SMEs) do not have a codified supply chain and that generally, these companies have a minimal budget, which requires a constant search for new suppliers that represent a reduction in costs. Moreover, most of the companies surveyed faced unexpected challenges, such as a lack of alternative suppliers. The present paper is original because it studies the supply chain in SMEs in the food sector during the COVID-19 pandemic, and it allows the ascertainment of practical suggestions for these companies to improve, as well as contributing to the clarification of the literature on the supply chain in times of crisis such as the current COVID-19 pandemic.