bluuebunny/crossref_metadata_2025 huggingface dataset:
Local PM2.5 Hotspot Detector at 300 m Resolution: A Random Forest–Convolutional Neural Network Joint Model Jointly Trained on Satellite Images and Meteorology
Authors: Zheng Tongshu , Bergin Michael , Wang Guoyin , Carlson David
Published: April 2021

Satellite-based rapid sweeping screening of localized PM2.5 hotspots at fine-scale local neighborhood levels is highly desirable. This motivated us to develop a random forest–convolutional neural network–local contrast normalization (RF–CNN–LCN) pipeline that detects local PM2.5 hotspots at a 300 m resolution using satellite imagery and meteorological information. The RF–CNN joint model in the pipeline uses three meteorological variables and daily 3 m/pixel resolution PlanetScope satellite imagery to generate daily 300 m ground-level PM2.5 estimates. The downstream LCN processes the estimated PM2.5 maps to reveal local PM2.5 hotspots. The RF–CNN joint model achieved a low normalized root mean square error for PM2.5 of within ~31% and normalized mean absolute error of within ~19% on the holdout samples in both Delhi and Beijing. The RF–CNN–LCN pipeline reasonably predicts urban PM2.5 local hotspots and coolspots by capturing both the main intra-urban spatial trends in PM2.5 and the local variations in PM2.5 with urban landscape, with local hotspots relating to compact urban spatial structures and coolspots being open areas and green spaces. Based on 20 sampled representative neighborhoods in Delhi, our pipeline revealed an annual average 9.2 ± 4.0 μg m−3 difference in PM2.5 between the local hotspots and coolspots within the same community. In some cases, the differences were much larger; for example, at the Indian Gandhi International Airport, the increase was 20.3 μg m−3 from the coolest spot (the residential area immediately outside the airport) to the hottest spot (airport runway). This work provides a possible means of automatically identifying local PM2.5 hotspots at 300 m in heavily polluted megacities and highlights the potential existence of substantial health inequalities in long-term outdoor PM2.5 exposures even within the same local neighborhoods between local hotspots and coolspots.
Drought and Anthropogenic Effects on Acacia Populations: A Case Study from the Hyper-Arid Southern Israel
Authors: Armoza-Zvuloni Rachel , Shlomi Yanai , Shem-Tov Rachamim , Stavi Ilan , Abadi Itay
Published: April 2021

Acacia encompasses a keystone genus across the Middle Eastern and African drylands. This study assesses the dynamics of Acacia populations in two ephemeral stream channels (Nahal Naomi and Nahal Yael) in the hyper-arid Arava region following the establishment of a dam in the upstream channel of Nahal Yael and a long-term regional drought episode. The assessments were conducted at the individual and population levels, for a period of 45 years (during 1972, 1994 and 2017). In Nahal Naomi, the population increased by 35% during 1972–1994 (a relatively rainy period) and experienced low mortality (net change of +1.6% year−1). However, following a regional drought episode between 1995 and 2009, this population decreased by 57% (net change of −2.5% year−1). In Nahal Yael, the acacia population declined by 66% during 1972–1994 (net change of −1.6% year−1). Between 1994–2017, this population was co-affected by dam and drought, with no recruitment, and declined by 70% (net change of −2.0% year−1). By examining the tree’s specific location, species, age and state of preservation of dead individuals, we identified factors that influence tree mortality, and highlighted the adverse impacts of natural and anthropogenic disturbances on Acacia populations in hyper-arid environments.
Modernization of the Infrastructure of Marine Passenger Port Based on Synthesis of the Structure and Forecasting Development
Authors: Krile Srećko , Maiorov Nikolai , Fetisov Vladimir
Published: April 2021

Passenger seaports are new starting-points of urban development. They form a new independent industry, become new incentives for improving urban infrastructure and increase the tourist attractiveness of the city itself and the region. In view of changes in passenger service processes, changes in route ferry and cruise networks, due to COVID-19, the heads of ports and terminals set new strategic tasks to determine the directions for infrastructure modernization and forecast development. The regions of the Adriatic and Baltic Seas were chosen as the experimental base. To find new answers, it is necessary to solve the problem of synthesizing the structure of a sea passenger port, taking into account all processes and services, the influence of the external environment, building a system of target functions and limiting conditions. Thus, the necessity of forming informed decisions on modernization based on the construction of new mathematical models is substantiated. A new function has been introduced that describes the influence of the external environment. Particular attention is given to the study of the mutual influence of the city and the sea passenger port in order to determine the need to improve transport accessibility and change the near-port transport space. The presented models of structure synthesis and target functions, models including functions of the influence of the external environment on the system “city infrastructure-sea passenger port-ferry company” allow at a qualitatively new level to solve the problem of forecasting development and form a system making decisions to improve the position of the passenger terminal in the sea region. The developed models and synthesis problem formation are applicable to sea passenger ports and terminals in other regions of the seas. The models are applicable both at the stage of creating a new marine terminal and during the study and subsequent modernization of the infrastructure. The presented new models allow the port manager to give answers to the questions of strategic development of sea passenger ports in sea regions.
Sustainability Performance Assessment Using Self-Organizing Maps (SOM) and Classification and Ensembles of Regression Trees (CART)
Authors: Nilashi Mehrbakhsh , Asadi Shahla , Abumalloh Rabab Ali , Samad Sarminah , Ghabban Fahad , Supriyanto Eko , Osman Reem
Published: April 2021

This study aims to develop a new approach based on machine learning techniques to assess sustainability performance. Two main dimensions of sustainability, ecological sustainability, and human sustainability, were considered in this study. A set of sustainability indicators was used, and the research method in this study was developed using cluster analysis and prediction learning techniques. A Self-Organizing Map (SOM) was applied for data clustering, while Classification and Regression Trees (CART) were applied to assess sustainability performance. The proposed method was evaluated through Sustainability Assessment by Fuzzy Evaluation (SAFE) dataset, which comprises various indicators of sustainability performance in 128 countries. Eight clusters from the data were found through the SOM clustering technique. A prediction model was found in each cluster through the CART technique. In addition, an ensemble of CART was constructed in each cluster of SOM to increase the prediction accuracy of CART. All prediction models were assessed through the adjusted coefficient of determination approach. The results demonstrated that the prediction accuracy values were high in all CART models. The results indicated that the method developed by ensembles of CART and clustering provide higher prediction accuracy than individual CART models. The main advantage of integrating the proposed method is its ability to automate decision rules from big data for prediction models. The method proposed in this study could be implemented as an effective tool for sustainability performance assessment.
Economic and Environmental Assessment of Two Different Rain Water Harvesting Systems for Agriculture
Authors: Pari Luigi , Suardi Alessandro , Stefanoni Walter , Latterini Francesco , Palmieri Nadia
Published: April 2021

Increasing aridity and subsequent water scarcity are currently among the major problems of agriculture. Rainwater harvesting could represent a way to tackle this issue, and, as a consequence, scientific research has been more and more focused on such topic. On the other hand, few scientific studies related to economic and environmental assessment of rainwater harvesting systems in agriculture are available. The present study carried out an economic and environmental analysis of two different systems for rainwater harvesting: a typical pond and an innovative flexible water storage system (FWSS). The environmental and economic performance of the systems was compared using the Life Cycle Assessment (LCA) and Life Cycle Costing (LCC) methodologies, referring to a functional unit (FU) of 1 m3 of storable water. The FWSS showed better environmental end economic performance than the pond system, resulting with both lower environmental impacts (17.04 g per m3 CO2vs 28.2 g per m3 CO2) and lower costs (16.94 € per m3vs 20.41 € per m3). Moreover, the pond system was more impactful than the FWSS for all the 17 categories investigated. Therefore, the FWSS can be a suitable solution for water harvesting in agriculture sector, showing interesting features for farmers.
Remediating Agricultural Legacy Nutrient Loads in the Baltic Sea Region
Authors: Tanzer Julia , Hermann Ralf , Hermann Ludwig
Published: April 2021

The Baltic Sea is considered the marine water body most severely affected by eutrophication within Europe. Due to its limited water exchange nutrients have a particularly long residence time in the sea. While several studies have analysed the costs of reducing current nutrient emissions, the costs for remediating legacy nutrient loads of past emissions remain unknown. Although the Baltic Sea is a comparatively well-monitored region, current data and knowledge is insufficient to provide a sound quantification of legacy nutrient loads and much less their abatement costs. A first rough estimation of agricultural legacy nutrient loads yields an accumulation of 0.5–4.0 Mt N and 0.3–1.2 Mt P in the Baltic Sea and 0.4–0.5 Mt P in agricultural soils within the catchment. The costs for removing or immobilising this amount of nutrients via deep water oxygenation, mussel farming and soil gypsum amendment are in the range of few tens to over 100 billion €. These preliminary results are meant as a basis for future studies and show that while requiring serious commitment to funding and implementation, remediating agricultural legacy loads is not infeasible and may even provide economic benefits to local communities in the long run.
Everyday Life Information Seeking Patterns of Resident Female University Students in Pakistan
Authors: Rafiq Sadaf , Iqbal Abid , Rehman Shafiq Ur , Waqas Muhammad , Naveed Muhammad Asif , Khan Shakeel Ahmad
Published: April 2021

Purpose: Everyday life information seeking (ELIS) is essential for the mastery of life and plays a central role in the daily problem-solving activities of all human beings. This study aimed to investigate the everyday life information seeking of female university students residing at hostels in Lahore, Pakistan. Design/methodology/approach: A quantitative research approach using a survey method was adopted to identify the dimensions of ELIS and to fill the paucity of research on the topic. Two-hundred and forty-eight female students living in various university and private hostels in Lahore, Pakistan, were surveyed, and the collected data was analyzed using Statistics Package for Social Sciences (SPSS) version 21. Findings: Results of the study revealed that hostel living expanded the social circle of students, as it offered exposure to diverse multicultural social groups. Female students living in hostels required information related to their academic needs, safety concerns, social life, and self-help issues. They relied mainly on mobiles phones, the internet, social media, and inter-personal relationships for everyday information. Cultural differences, natural hesitation, language barriers, time concerns, and difficulty in identifying reliable information were the primary obstacles in meeting everyday life information needs. Originality/value: The findings of this study can be used as a premise for developing interventions and information services for female students that allow them to live comfortably in a safe environment in hostels and achieve their educational goals. The study results may also provide useful insights for university administrations to establish libraries in hostels to better cater to their female residents’ information needs.
The Concept of Strategic Control in Marketing Management in Connection to Measuring Marketing Performance
Authors: Hadrian Piotr , Milichovský František , Mráček Pavel
Published: April 2021

This study deals with the issue of marketing control (the function that ties together the process of marketing management). More directly, we aim to provide a scientific reflection on the model presentation of the strategic level of such control. We present the views discussed in the literature on marketing control, which can be treated as its model conceptual and structural solutions. The main objective of the study was to define key factors in individual areas (the market area, the area of the customer’s value, the financial area) that are connected to business activities and show their interconnection. We further analyzed the relevance of marketing and business activities in connection to performance evaluation in three areas: market, customer, and financial performance. The empirical evidence of the study came from quantitative, firm-level data gathered through an email questionnaire, which yielded 708 qualified responses from companies in the Czech Republic. The analysis employed factor analysis on the way to identify the key marketing indicators supporting corporate strategy marketing in specific areas. Furthermore, Pearson’s chi-square test was used to find possible dependencies between observed factors. According to the obtained results and the application of the chosen statistic methods, we identified seven factors of which five factors were acceptable. For these five factors, we identified seven statistical dependencies. The obtained results show that companies primarily use financial indicators to monitor and check their activities in the marketing area. The usage of financial indicators in connection to the marketing area is based mainly on the traditional approach of companies in the measuring process. The whole control mechanism in the company requires continuous control of all corporate activities, with relevant changes in implementation, and a comparison of obtained results to competitors or a company’s results in previous years.
Attitudes of Fruit and Vegetable Farmers towards Organic Farming in Kathmandu Valley, Nepal
Authors: Nandwani Dilip , Jamarkattel Dinesh , Dahal Khem Raj , Poudel Ritikshya , Giri Suman , Joshi Toya Nath
Published: April 2021

Organic farming is increasingly popular among the farmers of Kathmandu valley. However, the organic growers have been facing issues in production, organic certification, and product marketing. To date, little is known about the challenges faced by the organic growers in Kathmandu valley. This study aimed to explore the status of organic farming, attitudes of farmers towards organic farming, their suggestions for improvement, and strengthening the value chain of organic products. Face-to-face interviews were conducted at Agriculture Knowledge Centre, Lalitpur, Nepal during December 2019 with 37 organic growers directly or indirectly involved in organic farming. The results showed that organic growers face challenges in marketing and institutional recognition. Challenges in product certification and marketing were reported by 45.95% of the total interviewed organic growers while following organic practices (transitional organic). Our study suggested that reducing the cost of production through easy access to organic inputs like organic seeds, fertilizers, and biopesticides are highly desired by the growers. Participatory Guarantee System (PGS) or group certification along with collective marketing could be the policy implications to address the issues. Organic farming in Kathmandu valley is limited to a niche market; however, due to increasing consumer demand for safe, fresh, and local food, the popularity of organic products is extending to other regions within the country.
Risk Management of Marine Capture Fisheries under Climate Change: Taking into Consideration the Effects of Uncertainty
Authors: Chen Jyun-Long , Hsiao Yao-Jen , Yip Kat-Kau
Published: April 2021

Multiple changes in marine resources (e.g., abundance, movements, distribution, biomass) caused by climate change are critical operational risks, leading to production uncertainty for capture fisheries. Therefore, risk management measures of coastal and offshore fisheries are critical issues in terms of operational sustainability. In this study, a questionnaire survey data set collected from fishers was analyzed using descriptive statistics, factor analysis, and a structural equation model (SEM) to examine fishers’ perceptions and the relationships among risk sources, production uncertainty, and adaptation measures. The results revealed that significant negative impacts existed between risk sources and adaptation measures, which means risk sources cannot directly influence risk management measure selection. However, production uncertainty could be an important mediator for risk management, thus most respondents think that mitigating production uncertainty is necessary. Eventually, the results could provide managerial implications for the fishery operators, policymakers and the government agencies.
Optimal Emission Reduction and Pricing in the Tourism Supply Chain Considering Different Market Structures and Word-of-Mouth Effect
Authors: Huang Xijia , Zhu Shuai , Wang Jia
Published: April 2021

In the context of carbon tax policy and word-of-mouth, local operators and tour operators in the tourism supply chain need to determine optimal wholesale price, carbon reduction level, and retail price of tour packages strategies. To address these decision-making issues, while considering the word-of-mouth effect, our paper considers a local operator determining wholesale price and carbon reduction level of the tour package and a tour operator determining retail price of the tour package. According to different bargaining powers, we study three scenarios: the local operator leading Stackelberg (LL), the tour operator leading Stackelberg (TL), and the static Nash game (NG). We develop three theoretical models and present some insights. We find that tourist’s sensitivity to word-of-mouth has positive (negative) impacts on optimal wholesale price, carbon reduction level, retail price, demand, and profits if the impact of word-of-mouth is positive (negative), while the impact of word-of-mouth is always having positive impacts on optimal decisions, demand, and profits. Interestingly, the NG market structure contributes the most environmentally-friendly products but mostly hurts the environment. The local operator under LL can obtain the largest profit, which is even larger than the profit of the tour operator, while the tour operator under NG and TL can obtain more profit than the local operator.
Guidelines for Tourism Sustainability in Ultra-Peripheral Territories: A Research Based on the Azores Region’s Touristic Companies’ Analysis
Authors: Couto Gualter , Castanho Rui Alexandre , Santos Carlos , Pimentel Pedro , Sousa Áurea , Faria Sandra , Batista Maria da Graça
Published: April 2021

Tourism is an important activity to achieve territorial sustainability. In fact, a properly planned long-term tourism activity is critical for the regional planning to reach the desired living conditions capable of attracting new residents in the future. Thereby, the present research aims to assess the perceptions of the managers of tourist companies in the Azores on sustainability actors about the sustainability of tourism activity in the archipelago. Contextually, throughout an exploratory methodology, it was possible to assess the Azores Touristic Companies managers’ perceptions. Hence, this paper shows that the sustainable practices most frequently adopted by the surveyed companies are the following: prioritize the purchase of regional goods and services (94.7%); selective waste separation (94.5%); minimize the use of hazardous substances or replace them with less hazardous products (92.3%); ensure the proper final destination of wastewater (public sanitation, septic tank) (88.8%); and adopt purchasing criteria that take into account environmentally friendly products or services (88.6%). This research also recognizes that 67% of the respondents consider that the respective participating companies have their goals aligned with environmental conservation principles, 66.7% aligned with environmental conservation principles, 36.9% aligned with social conservation principles and 26.4% aligned with cultural conservation principle.
Soil Bacteria and Fungi Respond Differently to Organisms Covering on Leshan Giant Buddha Body
Authors: Chen Xuli , Wang Manfei , Wu Fujia , Sun Bo , Yang Tianyu , Song Huixing
Published: April 2021

Soil microbial communities play a key role in the functioning of terrestrial ecosystems, in particular through their interaction with above-ground plants and weathering of rocks. In this study, the chemical properties and microbial diversity of soils covered by different organisms on Leshan Giant Buddha body were analyzed. The results showed that the concentration of soil total organic carbon (TOC), total nitrogen (TN) and total phosphorus (TP) increased significantly with the change of above-ground organisms from lichens to bryophytes and vascular plants. TOC, TN, TP, C:N, and C:P were significantly correlated with the composition of microbial community. Bacterial and fungal diversity responded differently to the change of organisms, and the diversity of bacterial communities changed significantly among different sites. The settlement of Embryogenic plants increased the α-diversity indices including Sobs, Shannon, Ace and Chao indices, which were highest in sites covered with Ferns. The relative abundances of Chloroflexi, Acidobacteria, Nitrospirae and Planctomycetes increased with the order of Bryophyte, Fern, Grass and Shrub, and Cyanobacteria was opposite, with the highest in samples covered with lichens. These results improve understanding of plant–fungi–bacteria interactions during the early stages of soil development, and provide a scientific basis for protection of Leshan Giant Buddha.
A Review of Corporate Purpose: An Approach to Actioning the Sustainable Development Goals (SDGs)
Authors: Jimenez Dayana , Franco Isabel B. , Smith Tahlia
Published: April 2021

This journal article explores Corporate Purpose as an approach to action the Sustainable Development Goals (SDGs). It achieves this objective by presenting a review of existing literature on Corporate Purpose and SDGs from the disciplines of business ethics, management studies, economics and psychology. The review showcases contributions exploring whether and how Corporate Purpose-led strategy facilitates the operationalization of the SDGs and proposes an emerging research agenda. This article employed an inductive approach methodology through grounded theory to develop a critical analysis of scientific evidence-based work for theory construction on Corporate Purpose. One of the major findings of this review is that to achieve the SDGs companies need to shift found from the “business as usual” approach, which perceives sustainability as an externality, to incorporating sustainability factors in the company’s underlying purpose. The article also (1) identifies trends in research outputs and reveals five major antecedents of the phenomenon (drivers to purpose), (2) identifies key gaps within the existing literature, (3) distinguishes three current approaches to Corporate Purpose and (4) elaborates on current theories of Corporate Purpose and SDGs linkages to identify opportunities and aid future research. In summary, this article unpacks Corporate Purpose mechanisms to action the SDGs and stimulates academic discussion of business transformational approaches to long-standing sustainability challenges.
Enhancing the Microstructure and Sustainability of Ultra-High-Performance Concrete Using Ultrafine Calcium Carbonate and High-Volume Fly Ash under Different Curing Regimes
Authors: Azmee Norzaireen , Abbas Yassir M. , Shafiq Nasir , Fares Galal , Osman Montasir , Iqbal Khan M.
Published: April 2021

In current practice, the performance-based concrete mix (PBCM) approach has become quite popular because it enhances the quality of materials that are fundamentally necessary for a particular situation. In the present study, experimental analysis is performed to determine the optimal mechanical properties and microstructural characteristics of concrete for sustainable development and cost effectiveness. Specifically, a mixture of high-volume fly ash (FA) and ultrafine calcium carbonate (UFCC) is investigated as a partial substitution of cement. For optimizing the concrete’s performance, various curing regimes are applied to evaluate the best conditions for obtaining ideal mechanical and microstructural properties. The results show that concrete containing 10% UFCC with a mean particle size of 3.5 µm blended with 40% FA yielded the best performance, with an enhancement of 25% in the compressive strength in the early age. Moreover, the UFCC improved the compactness and refined the interstitial transition zone (ITZ). However, the effects of the different curing methods on the concrete’s strength were insignificant after 28 days.
Inulin Content in Chipped and Whole Roots of Cardoon after Six Months Storage under Natural Conditions
Authors: Pari Luigi , Alfano Vincenzo , Stefanoni Walter , Latterini Francesco , Liuzzi Federico , De Bari Isabella , Valerio Vito , Ciancolini Anna
Published: April 2021

Industries currently rely on chicory and Jerusalem artichoke for inulin extraction but also cardoon is proved to synthetize and store high quantity of inulin in roots as well. Cardoon is a multipurpose crop, well adapted to marginal lands, whose main residues at the end of cropping cycle consist of roots. However, cardoon roots are a suitable source of inulin, that is of high interest for new generation biodegradable bioplastics production. On the other hand, a sustainable supply chain for inulin production from cardoon roots has not been developed yet. In particular, in the inulin supply chain the most critical part is storage, which can negatively affect both cost and inulin quantity. In the present study the effect on inulin content in cardoon roots stored as dried chipped roots (CRt) and dried whole roots (WRt) was investigated in a 6-month storage trial. Our findings suggest that chipping before storage did not affect the inulin content during the storage. Furthermore, it reduced the time needed for drying by 33.3% and increased the bulk density by 154.9% with the consequent reduction of direct cost for drying, transportation and storage.
Emergency-Proof Tourism: The Heritage of Industrial Archaeology in Internal Areas as a Potential for a Sustainable Tourism
Authors: Beretić Nađa , Talu Valentina , Cecchini Arnaldo
Published: April 2021

Instead of narrowly protecting the heritage, the UNESCO World Heritage Convention promotes a holistic development approach to respond to new societal challenges [...]
Comparative Analysis of Infusions with the Addition P. padus Bark: Assessment of the Antioxidant Potential and Their Inhibitory Effect on Enzymes Associated with Oxidative Stress
Authors: Telichowska Aleksandra , Kobus-Cisowska Joanna , Szulc Piotr , Ligaj Marta , Stuper-Szablewska Kinga , Szwajgier Dominik , Bujak Henryk
Published: April 2021

Prunus padus L., is not very popular plant, it is commonly found due to low soil requirements and easy to settle in various places. As for now, concerning food technology, there is no wide application for P. padus. Therefore, the aim of this study is to evaluate the possibility of using bird cherry bark as an ingredient in herbal functional teas. In the first step, the conditions for extraction of the bark were electrochemically optimized. It was proven that the highest content of polyphenols could be found in the sample consisting of chamomile, linden flower, and calendula (7939.8 ± 106.6 mg/100 g dm). In the beta-carotene bleaching test, the highest activity could be spotted for calendula tea (16.7 ± 1.1c%) and chamomile tea (15.0 ± 2.0c%) and concerning the test for linden flower tea without added bark (134.4 ± 15.1b μg ascorbic acid /mL). The property of the tested teas to inhibit cholinesterases was proven. What is more, P. padus bark infusion showed the highest activity of 15.8 ± 1.1d μg neostigmine/mL, for acetylcholinesterases (AChE) inhibition and 21.2 ± 1.0c μg neostigmine/mL for butyrylcholinesterases (BChE). The same tea also showed the highest activity to reduce ions of iron (Fe(III)): 25.3 ± 0.9c μg Trolox /mL and glutathione reductase and glutathione peroxidase inhibition, 87.0 ± 1.1e% and 64.9 ± 2.0d% respectively. The use of P. padus bark may be vital in the preventive care concerning modern-age diseases and allow for the production of a new range of products with distinctive sensory characteristics and functional properties and, at the same time, in combating the spread of P. padus in the farm and forest ecosystem.
Measuring Child Multidimensional Deprivation: A Sustainability Perspective
Authors: Biggeri Mario , Ferrone Lucia
Published: April 2021

Child multidimensional deprivation and poverty is a key challenge to achieving sustainable development. The aim of this paper is to present and apply a new composite index for evaluating the progress towards eradicating child poverty: the Child Multidimensional Deprivation Index (CMDI). This index stems from the foundational literature on multidimensional child poverty that is rooted in the work started by UNICEF and based on the seven core dimensions of multidimensional child deprivation, while considering two additional dimensions of environmental sustainability. The CMDI applies a novel method of aggregation that allows for flexibility of substitution between dimensions, therefore overcoming some of the limitations of conventional indices. Results for 24 countries show that most countries experienced a decrease in multidimensional deprivation in the years between 2010 and 2016, but some of the poorest countries saw an increase in deprivation. Additionally, in several countries, the decrease in child deprivation was small. Results also show that investment in social spending is associated with a lower level of deprivation. Investment in the social sector is crucial to achieving this goal and preventing the negative effects of economic and other types of crisis.
Design for Circularity Guidelines for the EEE Sector
Authors: Berwald Anton , Dimitrova Gergana , Feenstra Thijs , Onnekink Joop , Peters Harm , Vyncke Gianni , Ragaert Kim
Published: April 2021

The increased diversity and complexity of plastics used in modern devices, such as electrical and electronic equipment (EEE), can have negative impacts on their recyclability. Today, the main economic driver for waste electrical and electronic equipment (WEEE) recycling stems from metal recovery. WEEE plastics recycling, on the other hand, still represents a major challenge. Strategies like design ‘for’, but also the much younger concept of design ‘from’ recycling play a key role in closing the material loops within a circular economy. While these strategies are usually analysed separately, this brief report harmonises them in comprehensive Design for Circularity guidelines, established in a multi-stakeholder collaboration with industry leaders from the entire WEEE value chain. The guidelines were developed at the product and part levels. They are divided in five categories: (1) avoidance of hazardous substances; (2) enabling easy access and removal of hazardous or polluting parts; (3) use of recyclable materials; (4) use of material combinations and connections allowing easy liberation; (5) use of recycled materials. These guidelines are the first harmonised set to be released for the EEE industry. They can readily serve decision-makers from different levels, including product designers and manufacturers as well as policymakers.
Social Sustainable Education in a Refugee Camp
Authors: Heldal Marit , Hagen Trond Løge , Olaussen Ingvild Olsen , Haugen Gry Mette D.
Published: April 2021

The main objective of this article is to discuss how an Early Childhood Education and Care (ECEC) institution in a refugee camp can promote social sustainable education. By giving empirical examples of innovative pedagogical ideas and practices inside a Greek ECEC institution, this article argues that concepts of formation are ways to promote social sustainable education. The article draws on data from an ECEC institution in which both the children living in a refugee camp and Greek children are located together. With nature as a neutral cultural mediator, serving as a pedagogical framework, children can make new experiences based on participation, equality and mutual respect. Data were produced through field observations, semi-structured interviews and one group interview from March 2019 until September 2019. The empirical data reveal three dimensions that we suggest work as markers for social sustainable pedagogical practice: the importance of nature and play as a facilitator for children’s activities; the importance of participation and equality; and the importance of commitment to the community. The findings are discussed in relation with theoretical concepts of formation, with a particular focus on children as active agents and the value of experiences, and the importance of highly qualified educators.
The Potential of Albanian Tourism Sector
Authors: Burlea-Schiopoiu Adriana , Ozuni Ferjolt
Published: April 2021

The aim is to develop a profile of Albania’s hotels based on a critical analysis of the attitude of foreign tourists visiting the country. COVID-19 negatively affected the Albanian tourism sector because 2,657,818 foreign citizens visited Albania in 2020, which is 41.49% less than in 2019. To investigate the potential of Albanian tourists, this study employs a quantitative analysis and a Regression Model. The results demonstrate that the tourist is a rational decision-maker and our findings indicate that there are differences in expectations and perceptions among respondents. These differences are not significantly correlated with the respondents’ gender, but in terms of education level, the differences are significant for empathy, where the respondents with a college degree have a higher level of expectations than respondents that have higher education. Our findings highlight the practical implications of research for managers of hotels because they have to take into account that tourists are very sensitive to the level of understanding of their specific needs by hotel staff. Recently, more than before pandemic COVID-19, the relationship between expectations and perceptions of tourists visiting Albania is strongly influenced by tangible elements of the touristic package.
Fire Behavior Prediction in Larch Forests of the Kazakhstan Altai
Authors: Volokitina Aleksandra , Kalachev Andrey , Korets Mikhail , Sofronova Tatiana
Published: April 2021

This paper considers automated fire behavior prediction in larch forests of the Kazakhstan Altai based on large-scale vegetation fuel maps (VF maps). First-time pyrological description of the Kazakhstan Altai larch forests was performed, thus facilitating VF maps’ creation using forest inventory information in a geographical information system (GIS). Based on the methodological developments of the Sukachev Institute of Forest, types of primary fire carriers were identified for larch forests and other categories of sites. On the example of the Markakol Forestry area (Kazakhstan Altai), our fire growth simulation modeling system was adapted for predicting fire behavior in the mountain terrain. The developed fire simulation software helped not only identify inventory plots ready to burn, but also assess spread rate for fire parts dependent upon weather conditions, predict fire intensity and fire development, and calculate the required manpower and resources for fire suppression. The effects of each specific fire were predicted in terms of percentage of tree mortality dependent upon fire intensity, tree species, and average tree diameter. Examples of VF maps were made for different periods of a fire season and analysis was given to behavior of a simulated surface fire in the Markakol Forestry area.
A Note on Type-Two Degenerate Poly-Changhee Polynomials of the Second Kind
Authors: Dolgy Dmitry V. , Khan Waseem A.
Published: April 2021

In this paper, we first define type-two degenerate poly-Changhee polynomials of the second kind by using modified degenerate polyexponential functions. We derive new identities and relations between type-two degenerate poly-Changhee polynomials of the second kind. Finally, we derive type-two degenerate unipoly-Changhee polynomials of the second kind and discuss some of their identities.
Asymmetry in Three-Dimensional Sprinting with and without Running-Specific Prostheses
Authors: Emonds Anna Lena , Mombaur Katja
Published: April 2021

As a whole, human sprinting seems to be a completely periodic and symmetrical motion. This view is changed when a person runs with a running-specific prosthesis after a unilateral amputation. The aim of our study is to investigate differences and similarities between unilateral below-knee amputee and non-amputee sprinters—especially with regard to whether asymmetry is a distracting factor for sprint performance. We established three-dimensional rigid multibody models of one unilateral transtibial amputee athlete and for reference purposes of three non-amputee athletes. They consist of 16 bodies (head, ipper, middle and lower trunk, upper and lower arms, hands, thighs, shanks and feet/running specific prosthesis) with 30 or 31 degrees of freedom (DOFs) for the amputee and the non-amputee athletes, respectively. Six DOFs are associated with the floating base, the remaining ones are rotational DOFs. The internal joints are equipped with torque actuators except for the prosthetic ankle joint. To model the spring-like properties of the prosthesis, the actuator is replaced by a linear spring-damper system. We consider a pair of steps which is modeled as a multiphase problem with each step consisting of a flight, touchdown and single-leg contact phase. Each phase is described by its own set of differential equations. By combining motion capture recordings with a least squares optimal control problem formulation including constraints, we reconstructed the dynamics of one sprinting trial for each athlete. The results show that even the non-amputee athletes showed less symmetrical sprinting than expected when examined on an individual level. Nevertheless, the asymmetry is much more pronounced in the amputee athlete. The amputee athlete applies larger torques in the arm and trunk joints to compensate the asymmetry and experiences a destabilizing influence of the trunk movement. Hence, the inter-limb asymmetry of the amputee has a significant effect on the control of the sprint movement and the maintenance of an upright body position.
Educational Escape Rooms as an Active Learning Tool for Teaching Telecommunications Engineering
Authors: Ross Robert , de Souza-Daw Anthony
Published: April 2021

Traditional education, particularly at a university level is not necessarily very engaging. Educational escape rooms are a recent game based learning approach which combines team based problem solving with a story-line and cryptic clues. In this paper, we apply the concept of educational escape rooms to the telecommunications engineering classroom by creating a series of two separate scenarios, each containing three puzzles. Our evaluation is based on survey results from telecommunication experts which suggest that this will be an engaging and challenging tool for teaching telecommunications engineering. Although educational escape rooms are rapidly being deployed in education, these are the first educational escape rooms that specifically addresses the field of telecommunications engineering.
Error Performance Estimation of Modulated Retroreflective Transdermal Optical Wireless Links with Diversity under Generalized Pointing Errors
Authors: Varotsos George K. , Nistazakis Hector E. , Aidinis Konstantinos , Jaber Fadi , Nasor Mohd , Rahman Kanhira Kadavath Mujeeb
Published: April 2021

Recent developments in both optical wireless communication (OWC) systems and implanted medical devices (IMDs) have introduced transdermal optical wireless (TOW) technology as a viable candidate for extremely high-speed in-body to out-of-body wireless data transmissions, which are growing in demand for many vital biomedical applications, including telemetry with medical implants, health monitoring, neural recording and prostheses. Nevertheless, this emerging communication modality is primarily hindered by skin-induced attenuation of the propagating signal bit carrier along with its stochastic misalignment-induced fading. Thus, by considering a typical modulated retroreflective (MRR) TOW system with spatial diversity and optimal combining (OC) for signal reception in this work, we focus, for the first time in the MRR TOW literature, on the stochastic nature of generalized pointing errors with non-zero boresight (NZB). Specifically, under these circumstances, novel analytical mathematical expressions were derived for the total average bit error rate (BER) of various system configurations. Their results revealed significant outage performance enhancements when spatial diversity was utilized. Moreover, taking into consideration the total transdermal pathloss along with the effects of stochastic NZB pointing errors, the critical average signal-to-noise ratio (SNR) metric was evaluated for typical power spectral-density values.
Transition Metals in Freshwater Crustaceans, Tilapia, and Inland Water: Hazardous to the Population of the Small Island Province
Authors: Agarin Christine Joy M. , Mascareñas Doreen R. , Nolos Ronnel , Chan Eduardo , Senoro Delia B.
Published: April 2021

This paper elaborates on the potential toxicants detected in inland water, freshwater crustaceans, and tilapia in an island that experienced mining disasters in 1993 and 1996. Specimen samples were collected in six municipalities of the island province in 2019 and presence of metals (Cd, Cr, Cu, Fe, Mn, Ni, Pb, and Zn) were analyzed using Inductively Coupled Plasma-Optical Emission Spectrometer (ICP-OES). Potential ecological risks analysis followed the Hakanson approach. Canonical correspondence analysis PAST Version 3.22, IBM SPSS 25.0, and Pearson correlation were employed for statistical analysis, and GIS Pro 2.5 for mapping of sampling locations and spatial distribution. Results showed that Mn and Zn concentration was highest in surface water (SW) and groundwater (GW), respectively. All metal concentration values exceeded the maximum permissible limit by regulatory international organizations. Elevated concentration of Cr, Cu, Fe, Mn, and Zn was detected in both crustaceans and tilapia. The calculated health hazard indices were greater than one, which means potential high adverse effects on public health when ingested. The municipality of Sta. Cruz and Torrijos recorded higher potential ecological risk among the six municipalities. Results of the correlation analysis suggested that metals in SW and GW have a similar origin, mutual dependence, and identical behavior during transport.
Sphingomyelinase D Activity in Sicarius tropicus Venom: Toxic Potential and Clues to the Evolution of SMases D in the Sicariidae Family
Authors: Lopes Priscila Hess , Fukushima Caroline Sayuri , Shoji Rosana , Bertani Rogério , Tambourgi Denise V.
Published: April 2021

The spider family Sicariidae includes three genera, Hexophthalma, Sicarius and Loxosceles. The three genera share a common characteristic in their venoms: the presence of Sphingomyelinases D (SMase D). SMases D are considered the toxins that cause the main pathological effects of the Loxosceles venom, that is, those responsible for the development of loxoscelism. Some studies have shown that Sicarius spiders have less or undetectable SMase D activity in their venoms, when compared to Hexophthalma. In contrast, our group has shown that Sicarius ornatus, a Brazilian species, has active SMase D and toxic potential to envenomation. However, few species of Sicarius have been characterized for their toxic potential. In order to contribute to a better understanding about the toxicity of Sicarius venoms, the aim of this study was to characterize the toxic properties of male and female venoms from Sicarius tropicus and compare them with that from Loxosceles laeta, one of the most toxic Loxosceles venoms. We show here that S. tropicus venom presents active SMases D. However, regarding hemolysis development, it seems that these toxins in this species present different molecular mechanisms of action than that described for Loxosceles venoms, whereas it is similar to those present in bacteria containing SMase D. Besides, our results also suggest that, in addition to the interspecific differences, intraspecific variations in the venoms’ composition may play a role in the toxic potential of venoms from Sicarius species.
Triple-Drug Treatment Is Effective for Lymphatic Filariasis Microfilaria Clearance in Samoa
Authors: Graves Patricia M. , Sheridan Sarah , Scott Jessica , Amosa-Lei Sam Filipina , Naseri Take , Thomsen Robert , King Christopher L. , Lau Colleen L.
Published: April 2021

Following the first triple-drug mass drug administration (MDA) for lymphatic filariasis in Samoa in 2018, unexpected persistence of microfilaria (Mf) positivity in 18 (15%) of 121 antigen-positive persons was observed in a nationwide household survey 1–2 months later. Of the 18 Mf positive persons, 14 reported taking the MDA, raising concerns about MDA efficacy. In 2019, 5–6 months after the 2018 survey, a monitored treatment study was done to evaluate directly observed weight-based treatment in these Mf positive individuals. Mf presence and density were assessed before and 7 days after treatment, using 1 mL membrane filtered venous blood, and 60 uL thick blood films on slides prepared from venous or fingerprick blood. All 14 participants were still Mf positive on filters from venous blood pre-treatment samples, but two were negative by slide made from the same samples. Mf were cleared completely by day 7 in 12 of 13 participants followed up, and by day 30 in the remaining participant. Filtered blood using EDTA samples (to reduce clumping of Mf) is preferred over slides alone for improving the likelihood of detecting Mf and estimating their density. The triple-drug MDA strategy was effective at clearing Mf when given and taken at the correct dose.