bluuebunny/crossref_metadata_2025 huggingface dataset:
OLCI A/B Tandem Phase Analysis, Part 1: Level 1 Homogenisation and Harmonisation
Authors: Lamquin Nicolas , Clerc Sébastien , Bourg Ludovic , Donlon Craig
Published: June 2020

Copernicus is a European system for monitoring the Earth in support of European policy. It includes the Sentinel-3 satellite mission which provides reliable and up-to-date measurements of the ocean, atmosphere, cryosphere, and land. To fulfil mission requirements, two Sentinel-3 satellites are required on-orbit at the same time to meet revisit and coverage requirements in support of Copernicus Services. The inter-unit consistency is critical for the mission as more S3 platforms are planned in the future. A few weeks after its launch in April 2018, the Sentinel-3B satellite was manoeuvred into a tandem configuration with its operational twin Sentinel-3A already in orbit. Both satellites were flown only thirty seconds apart on the same orbit ground track to optimise cross-comparisons. This tandem phase lasted from early June to mid October 2018 and was followed by a short drift phase during which the Sentinel-3B satellite was progressively moved to a specific orbit phasing of 140° separation from the sentinel-3A satellite. In this paper, an output of the European Space Agency (ESA) Sentinel-3 Tandem for Climate study (S3TC), we provide a full methodology for the homogenisation and harmonisation of the two Ocean and Land Colour Instruments (OLCI) based on the tandem phase. Homogenisation adjusts for unavoidable slight spatial and spectral differences between the two sensors and provide a basis for the comparison of the radiometry. Persistent radiometric biases of 1–2% across the OLCI spectrum are found with very high confidence. Harmonisation then consists of adjusting one instrument on the other based on these findings. Validation of the approach shows that such harmonisation then procures an excellent radiometric alignment. Performed on L1 calibrated radiances, the benefits of harmonisation are fully appreciated on Level 2 products as reported in a companion paper. Whereas our methodology aligns one sensor to behave radiometrically as the other, discussions consider the choice of the reference to be used within the operational framework. Further exploitation of the measurements indeed provides evidence of the need to perform flat-fielding on both payloads, prior to any harmonisation. Such flat-fielding notably removes inter-camera differences in the harmonisation coefficients. We conclude on the extreme usefulness of performing a tandem phase for the OLCI mission continuity as well as for any optical mission to which the methodology presented in this paper applies (e.g., Sentinel-2). To maintain the climate record, it is highly recommended that the future Sentinel-3C and Sentinel-3D satellites perform tandem flights when injected into the Sentinel-3 time series.
Periodic Relations between Terrestrial Vegetation and Climate Factors across the Globe
Authors: Liang Boyi , Liu Hongyan , Chen Xiaoqiu , Zhu Xinrong , Cressey Elizabeth L. , Quine Timothy A.
Published: June 2020

In this paper, cross-spectrum analysis was used to verify the agreement of periodicity between the global LAI (leaf area index) and climate factors. The results demonstrated that the LAI of deciduous forests and permanent wetlands have high agreement with temperature, rainfall and radiation over annual cycles. A low agreement between the LAI and seasonal climate variables was observed for some of the temperate and tropical vegetation types including shrublands and evergreen broadleaf forests, possibly due to the diversity of vegetation and human activities. Across all vegetation types, the LAI demonstrated a large time lag following variation in radiation (>1 month), whereas relatively short lag periods were observed between the LAI and annual temperature (around 2 weeks)/rainfall patterns (less than 10 days), suggesting that the impact of radiation on global vegetation growth is relatively slow, which is in accord with the results of previous studies. This work can provide a benchmark of the phenological drivers in global vegetation, from the perspective of periodicity, as well as helping to parameterize and refine the DGVMs (Dynamic Global Vegetation Models) for different vegetation types.
On the Use of the OptD Method for Building Diagnostics
Authors: Suchocki Czesław , Błaszczak-Bąk Wioleta , Damięcka-Suchocka Marzena , Jagoda Marcin , Masiero Andrea
Published: June 2020

Terrestrial laser scanner (TLS) measurements can be used to assess the technical condition of buildings and structures; in particular, high-resolution TLS measurements should be taken in order to detect defects in building walls. This consequently results in the creation of a huge amount of data in a very short time. Despite high-resolution measurements typically being needed in certain areas of interest, e.g., to detect cracks, reducing redundant information on regions of low interest is of fundamental importance in order to enable computationally efficient and effective analysis of the dataset. In this work, data reduction is made by using the Optimum Dataset (OptD) method, which allows to significantly reduce the amount of data while preserving the geometrical information of the region of interest. As a result, more points are retained on areas corresponding to cracks and cavities than on flat and homogeneous surfaces. This approach allows for a thorough analysis of the surface discontinuity in building walls. In this investigation, the TLS dataset was acquired by means of the time-of-flight scanners Riegl VZ-400i and Leica ScanStation C10. The results obtained by reducing the TLS dataset by means of OptD show that this method is a viable solution for data reduction in building and structure diagnostics, thus enabling the implementation of computationally more efficient diagnostic strategies.
Digital Aerial Photogrammetry (DAP) and Airborne Laser Scanning (ALS) as Sources of Information about Tree Height: Comparisons of the Accuracy of Remote Sensing Methods for Tree Height Estimation
Authors: Mielcarek Miłosz , Kamińska Agnieszka , Stereńczak Krzysztof
Published: June 2020

The rapid developments in the field of digital aerial photogrammetry (DAP) in recent years have increased interest in the application of DAP data for extracting three-dimensional (3D) models of forest canopies. This technology, however, still requires further investigation to confirm its reliability in estimating forest attributes in complex forest conditions. The main purpose of this study was to evaluate the accuracy of tree height estimation based on a crown height model (CHM) generated from the difference between a DAP-derived digital surface model (DSM) and an airborne laser scanning (ALS)-derived digital terrain model (DTM). The tree heights determined based on the DAP-CHM were compared with ground-based measurements and heights obtained using ALS data only (ALS-CHM). Moreover, tree- and stand-related factors were examined to evaluate the potential influence on the obtained discrepancies between ALS- and DAP-derived heights. The obtained results indicate that the differences between the means of field-measured heights and DAP-derived heights were statistically significant. The root mean square error (RMSE) calculated in the comparison of field heights and DAP-derived heights was 1.68 m (7.34%). The results obtained for the CHM generated using only ALS data produced slightly lower errors, with RMSE = 1.25 m (5.46%) on average. Both ALS and DAP displayed the tendency to underestimate tree heights compared to those measured in the field; however, DAP produced a higher bias (1.26 m) than ALS (0.88 m). Nevertheless, DAP heights were highly correlated with the heights measured in the field (R2 = 0.95) and ALS-derived heights (R2 = 0.97). Tree species and height difference (the difference between the reference tree height and mean tree height in a sample plot) had the greatest influence on the differences between ALS- and DAP-derived heights. Our study confirms that a CHM computed based on the difference between a DAP-derived DSM and an ALS-derived DTM can be successfully used to measure the height of trees in the upper canopy layer.
Radar and Sonar Imaging and Processing
Authors: Stateczny Andrzej , Kazimierski Witold , Kulpa Krzysztof
Published: June 2020

The 21 papers (from 61 submitted) published in the Special Issue “Radar and Sonar Imaging Processing” highlighted a variety of topics related to remote sensing with radar and sonar sensors. The sequence of articles included in the SI dealt with a broad profile of aspects of the use of radar and sonar images in line with the latest scientific trends. The latest developments in science, including artificial intelligence, were used.
Design of a Miniaturized Rectangular Multiturn Loop Antenna for Shielding Effectiveness Measurement
Authors: Youn Sangwoon , Lim Tae Heung , Kang Eunjung , Lee Dae Heon , Kim Ki Baek , Choo Hosung
Published: June 2020

This paper proposes a novel miniaturized rectangular loop antenna sensor consisting of a multiturn wire and a cuboid ferrite core. The lateral surface of the ferrite core is tightly wound by the multiturn wire. To verify its feasibility, the antenna sensor is fabricated, and the antenna factor (AF) levels are measured using the three-antenna method from the very low frequency (VLF) to the high-frequency (HF) bands. The measured AF levels are 31.8 dB (with a covering plastic case) and 33.1 dB (without a covering plastic case) at 30 kHz. In addition, the proposed antenna is employed in the shielding effectiveness measurement of a small commercial cabinet to observe its suitability for shielding effectiveness (SE) measurement of small shielding enclosures. The SE values averaged over the frequency range from 10 kHz to 3 MHz are 4.1 dB and 12 dB in the horizontal and vertical polarizations, respectively.
PortWeather: A Lightweight Onboard Solution for Real-Time Weather Prediction
Authors: Karvelis Petros , Mazzei Daniele , Biviano Matteo , Stylios Chrysostomos
Published: June 2020

Maritime journeys significantly depend on weather conditions, and so meteorology has always had a key role in maritime businesses. Nowadays, the new era of innovative machine learning approaches along with the availability of a wide range of sensors and microcontrollers creates increasing perspectives for providing on-board reliable short-range forecasting of main meteorological variables. The main goal of this study is to propose a lightweight on-board solution for real-time weather prediction. The system is composed of a commercial weather station integrated with an industrial IOT-edge data processing module that computes the wind direction and speed forecasts without the need of an Internet connection. A regression machine learning algorithm was chosen so as to require the smallest amount of resources (memory, CPU) and be able to run in a microcontroller. The algorithm has been designed and coded following specific conditions and specifications. The system has been tested on real weather data gathered from static weather stations and onboard during a test trip. The efficiency of the system has been proven through various error metrics.
Assessing the Effects of Kata and Kumite Techniques on Physical Performance in Elite Karatekas
Authors: Molinaro Luca , Taborri Juri , Montecchiani Massimo , Rossi Stefano
Published: June 2020

This study aimed at assessing physical performance of elite karatekas and non-karatekas. More specifically, effects of kumite and kata technique on joint mobility, body stability, and jumping ability were assessed by enrolling twenty-four karatekas and by comparing the results with 18 non-karatekas healthy subjects. Sensor system was composed by a single inertial sensor and optical bars. Karatekas are generally characterized by better motor performance with respect non-karatekas, considering all the examined factors, i.e., mobility, stability, and jumping. In addition, the two techniques lead to a differentiation in joint mobility; in particular, kumite athletes are characterized by a greater shoulder extension and, in general, by a greater value of preferred velocity to perform joint movements. Conversely, kata athletes are characterized by a greater mobility of the ankle joint. By focusing on jumping skills, kata technique leads to an increase of the concentric phase when performing squat jump. Finally, kata athletes showed better stability in closed eyes condition. The outcomes reported here can be useful for optimizing coaching programs for both beginners and karatekas based on the specific selected technique.
Classification of Ancient Roman Coins by Denomination Using Colour, a Forgotten Feature in Automatic Ancient Coin Analysis
Authors: Ma Yuanyuan , Arandjelović Ognjen
Published: June 2020

Ancient numismatics, that is, the study of ancient currencies (predominantly coins), is an interesting domain for the application of computer vision and machine learning, and has been receiving an increasing amount of attention in recent years. Notwithstanding the number of articles published on the topic, the variety of different methodological approaches described, and the mounting realisation that the relevant problems in the field are most challenging indeed, all research to date has entirely ignored one specific, readily accessible modality: colour. Invariably, colour is discarded and images of coins treated as being greyscale. The present article is the first one to question this decision (and indeed, it is a decision). We discuss the reasons behind the said choice, present a case why it ought to be reexamined, and in turn investigate the issue for the first time in the published literature. Specifically, we propose two new colour-based representations specifically designed with the aim of being applied to ancient coin analysis, and argue why it is sensible to employ them in the first stages of the classification process as a means of drastically reducing the initially enormous number of classes involved in type matching ancient coins (tens of thousands, just for Ancient Roman Imperial coins). Furthermore, we introduce a new data set collected with the specific aim of denomination-based categorisation of ancient coins, where we hypothesised colour could be of potential use, and evaluate the proposed representations. Lastly, we report surprisingly successful performances which goes further than confirming our hypothesis—rather, they convincingly demonstrate a much higher relevant information content carried by colour than even we expected. Thus we trust that our findings will be noted by others in the field and that more attention and further research will be devoted to the use of colour in automatic ancient coin analysis.
Contribution of Topical Antioxidants to Maintain Healthy Skin—A Review
Authors: Azevedo Martins Tércio Elyan , Sales de Oliveira Pinto Claudinéia Aparecida , Costa de Oliveira Andressa , Robles Velasco Maria Valéria , Gorriti Guitiérrez Arilmí Rosa , Cosquillo Rafael Martha Francisca , Tarazona Jossimar Paúl Huamaní , Retuerto-Figueroa Mónica Guadalupe
Published: June 2020

The skin is constantly exposed to various environmental stresses, in particular to the damage caused by pollution and ultraviolet radiation (UV), and as a consequence, the horny extract can be negatively impacted by the harmful influence of some of its surface components. The mechanisms involved in the degradation processes promoted by UV radiation are driven by the direct absorption of radiation via cellular chromophores, the formation of excited states and the consequent chemical reactions, or even by the photosensitization mechanisms, in which UV light is absorbed by the sensitizers that are excited and their reactions promote the formation of reactive oxygen species (ROS). The mechanisms of polluting agents are not yet fully understood, however, they indicate that one of the main mechanisms involved is oxidative stress by lipid peroxidation, with the ability to promote damage to the composition of sebum, the quality of the stratum corneum and also, promote aging skin. Recent studies demonstrate the potential of antioxidant agents, with an emphasis on products of natural origin, which try to promote the maintenance of the physiological balance of the skin.
Bilateral Deficit and Bilateral Performance: Relationship with Sprinting and Change of Direction in Elite Youth Soccer Players
Authors: Ascenzi Giampiero , Ruscello Bruno , Filetti Cristoforo , Bonanno Daniele , Di Salvo Valter , Nuñez F. Javier , Mendez-Villanueva Alberto , Suarez-Arrones Luis
Published: June 2020

The purpose of the study was to examine the differences in bilateral deficit (BLD) at different loadings during the half-squat jump (SJ) and horizontal countermovement jump (HCMJ) to determine if there is a relationship with linear sprint or change of direction (COD). The second goal was to check if fast players were more powerful in SJ and HCMJ than slow players in bilateral performance (BP). Twenty-seven male youth soccer players participated in the study. Players were divided in two groups, faster and slower, according to their sprint performance (10 and 40 m). BLD average power with body weight (BW) and 25%BW were significantly higher than 50%BW (p < 0.01). BLD during HCMJ was significantly higher than BLD during SJ with BW, 25%BW and 50%BW (p < 0.01). There were no statistical relationships between BLD and sprint or COD performance (p > 0.05). Fast players showed significantly higher SJ power with all the different loads and HCMJ than slow players (p < 0.01), and fast players lost more time executing COD-90° than slow players (p < 0.01). There were no statistical differences between fast and slow players in BLD. BLD seems to be dependent on motor task, contraction type and load and could not be a proper measure to estimate sprint and COD performance. Faster players are confirmed to be more powerful players than slow players, and decrements in COD could be a key benchmark to identify deficit between linear and COD performance.
Rising Inequality and Entrepreneurship during Economic Downturn: An Analysis of Opportunity and Necessity Entrepreneurship in Spain
Authors: Aceytuno María-Teresa , Sánchez-López Celia , de Paz-Báñez Manuela A. de
Published: June 2020

There is a consensus among researchers that one of the most important effects of the recent economic downturn that started in 2009—also known as the Great Recession—in Spain has been rising income inequality. In this context, researchers are concerned about the effects of inequality on the economy, and this concern is even more marked now, when the world is facing a new crisis that seems the equal of, or even more devastating than the last Great Recession as a consequence of Covid-19. Nevertheless, there is a lack of studies which consider the effects of inequality on entrepreneurship. This paper aims to contribute to a deeper understanding of the relationship between inequality and entrepreneurship in the context of an economic downturn. We focus on the 17 autonomous communities in Spain during the Great Recession (2007–2013). Using unbalanced panel data, we study the effect on entrepreneurial activity, differentiating between total, necessity- and opportunity-driven entrepreneurship. The contribution of this paper is twofold. First, our results offer new empirical evidence concerning the relationship between growing inequality and entrepreneurial activity, showing significant differences from results in the existing literature. Second, we explain how, in a recessionary context of highly restricted financial resources, inequality can negatively affect total, necessity- and opportunity-based entrepreneurship, preventing a large part of the population from engaging in this activity.
Riding Comfort Evaluation Based on Longitudinal Acceleration for Urban Rail Transit—Mathematical Models and Experiments in Beijing Subway
Authors: Ma Huiru , Chen Dewang , Yin Jiateng
Published: June 2020

Riding comfort is an important index to measure the quality of service for railways, especially for congested urban rail transit systems where the majority of passengers cannot find a seat. Existing studies usually employ the value of longitudinal acceleration as the key indicator to evaluate the riding comfort of vehicles, while there is no validated mathematical models to evaluate the riding comfort of urban rail trains from the perspective of passengers. This paper aims to employ the collected longitudinal acceleration data and passengers’ feedback data in Beijing subway to qualitatively measure and validate the riding comfort of transit trains. First, we develop four regular fuzzy sets based comfort measurement models, where the parameters of the fuzzy sets are determined by experiences of domain experts and the field data. Then a combinational model is given by averaging the four regular fuzzy set models to elaborate a comprehensive measurement for the riding comfort. In order to verify the developed models, we conducted a questionnaire survey in Beijing subway. The surveyed riding comfort data from passengers and the measured acceleration data are used to validate and optimize the proposed models. Two key parameters are deduced to describe all parameters in the fuzzy set models and a meta-heuristic algorithm is applied to optimize the parameters and weight coefficients of the combinational model. Comparing the collected comfort data with the comfort levels and values calculated by different models shows that the averaging model is better than any regular fuzzy set model. Furthermore, the optimized model is better than the averaging model and provides the best accuracy and robustness for riding comfort measurement. The models provided in this paper offer an optional way to measure the riding comfort for further assessment and more comprehensively tuning of train control systems.
Study on the Spatial Differentiation of the Populations on Both Sides of the “Qinling-Huaihe Line” in China
Authors: Liu Jie , Yang Qingshan , Liu Jian , Zhang Yu , Jiang Xiaojun , Yang Yangmeina
Published: June 2020

The “Qinling-Huaihe Line” is the recognized geographical boundary between north and south China. In the context of a widening north–south gap, the large-scale population flow and the implementation of the regional coordinated development strategy, the north–south differentiation of the Chinese population requires further investigation. This study is based on national census data and uses quantitative methods, such as the centralization index, coefficient of variation, hot spot analysis and geodetector, as research methods. This study takes the Qinling-Huaihe Line as the dividing line and aims to extensively explore the spatial differentiation, evolutionary characteristics, and influential factors of the populations on both sides. The main conclusions are as follows: ① From 1982 to 2010, the population share ratio on the south and north sides of the Qinling-Huaihe Line remained at 58:42, showing a distribution pattern of “South more and North less”. ② The area within 200 km from the Qinling-Huaihe Line is a transition area with a stable distribution of the populations on both sides. ③ From 1982 to 2010, the concentration of the population distribution gradually increased on both sides, and the concentration of population on the south side was higher; the characteristics of population growth had significant spatial differences between the two sides. ④ The results calculated by the geodetector method show that socioeconomic factors are the main factors causing the spatial differentiation of the populations, while physical geographical environmental factors have a smaller influence and their influence continues to decrease.
Unraveling the (Uneven) Linkage? A Reflection on Population Aging and Suburbanization in a Mediterranean Perspective
Authors: Cividino Sirio , Egidi Gianluca , Salvati Luca
Published: June 2020

A complex interplay between socioeconomic transformations and demographic dynamics has characterized the long-term development of European countries. As a characteristic example of such linkage, the present study focuses on the spatial relationship between metropolitan growth and population age structure. Preferences for urban and suburban locations reflect complex socioeconomic phenomena such as sprawl, class segregation, gentrification and filtering. However, the spatial linkage between sprawl and demographic transitions was relatively poorly analyzed, and should be more extensively investigated in relation with population dynamics and socioeconomic structures at local scale. By reviewing pertinent literature, this study outlines how space exerts a non-neutral impact on population age structures in Europe, shaping housing needs and influencing settlement patterns and processes of urban transformation. While suburban locations have concentrated younger families and larger households in Northern and Western Europe, the socio-demographic composition of new settlements is increasingly dominated by older inhabitants in the Mediterranean region. Results of this work suggest how discontinuous urban expansion was specifically associated with an elder, wealthy population with high standard of living and a preference for specific housing locations such as detached villas with gardens and swimming pools.
Entrepreneurial Orientation: Its Relationship with the Entrepreneur’s Subjective Success in SMEs
Authors: Manzano-García Guadalupe , Ayala-Calvo Juan-Carlos
Published: June 2020

Previous research has underlined, normally from a firm-level perspective, the importance of entrepreneurial orientation in explaining objective entrepreneurial success. Nevertheless, its impact on the perception of entrepreneurs with respect to what entrepreneurial success means to them remains underexplored. Based on a sample of manager-owners of small companies, and contemplating entrepreneurial orientation as an individual concept, we used a time-lagged design with two data-collection points to explain the effect of innovative orientation (IO), risk-taking orientation (RTO) and proactive orientation (PO) on the subjective success of entrepreneurs. Our results show that only one dimension of entrepreneurial orientation, proactive orientation, is associated with entrepreneurs’ satisfaction with their activity, life, organization and the growth of the company.
Bridging the Digital Divide for Older Adults via Observational Training: Effects of Model Identity from a Generational Perspective
Authors: Ma Qi , Chan Alan H. S. , Teh Pei-Lee
Published: June 2020

The proliferation of technology offers potential solutions for enhancing the well-being of older adults. However, older adults often have low digital literacy and are disengaged from the digital world. With age-appropriate training, older adults are expected to acquire a wide range of technological skills and bridge the digital divide. Through the lens of social cognitive theory, this study aims to investigate the effectiveness of observational training through behavior modeling in enhancing technology acceptance in older adults. The moderating effects of model identity on training outcomes from a generational perspective are examined. An empirical training experiment was completed with 59 community-dwelling older adults. Training outcomes were measured using cognitive knowledge, affective variables, and meta-cognition. The results ascertain the effectiveness of observational training in improving their technological knowledge, self-efficacy, outcome expectations, and sense of social connectedness when using technologies. From a generational perspective, the older adult behavior model is more effective than the young or child behavior models in increasing self-efficacy and willingness to use technology. The model identity further enhances the positive outcomes of training. The results of this study contribute to designing educational interventions to bridge the digital divide.
Multivariable Supplier Segmentation in Sustainable Supply Chain Management
Authors: Rius-Sorolla Gregorio , Estelles-Miguel Sofía , Rueda-Armengot Carlos
Published: June 2020

Pressure from stakeholders for sustainable development is forcing top management to reconsider its supply chain management. This form of sustainability must consider the risks, insecurities, and lack of proximity caused by any event on the global economy. Organizations must identify and manage the risks of every link in the chain, while pursuing sustainable development. Corporate social responsibility (CSR) and sustainable development must be the result of a deliberate and coordinated response by the entire organization. A suitable segmentation of suppliers allows development strategies to be prioritized. This article presents the steps that should be followed in supply chain management, the identification of risks, and the new leadership of purchasing management to develop a sustainable supply chain. To this end, some of the key industrial actions reported in the literature are outlined, and two case studies are presented to identify the steps for the segmentation and dynamic development of suppliers. This article provides reflections on the responsibilities of senior management in the new era of sustainable development and presents guidance on how to coordinate sustainable development in the supply chain.
How Can Travel Agencies Create Sustainable Competitive Advantages? Perspective on Employee Role Stress and Initiative Behavior
Authors: Huang Leo , Chang Kuang-Yu , Yeh Yu-Chen
Published: June 2020

In this study, we aimed to explore the importance of the roles of stress and organizational citizenship behavior toward market orientation in travel agencies from the perspective of organizational culture, and to provide practical suggestions for travel agencies’ human resources. We focused on investigating the relationship among market orientation, competitor orientation, and inter-functional coordination, role stress, conflict, ambiguity, and inter-enterprise organizational citizenship behavior. Under an enterprise strategy, the employee behavior model uses role stress and organizational citizenship behavior. Partial least squares (PLS) modelling was used to investigate the hypotheses in this research. We found that travel agency employees who focus on market-oriented strategy are able to reduce stress and promote the growth of organizational citizenship behavior within the enterprise. The results showed that reducing role ambiguity has no significant impact on organizational citizenship behavior. Adopting an accurate management strategy will reduce employee role stress and promote organizational citizenship behavior, thereby constructing a positive organizational culture and continuously creating competitive advantages, providing a strategy for the sustainable development of travel agencies.
The Implementation of Climate Change Policy in Post-Soviet Countries Achieving Long-Term Targets
Authors: Matiiuk Yuliia , Poškus Mykolas Simas , Liobikienė Genovaitė
Published: June 2020

Contribution to climate change mitigation is required for all world countries. Post-Soviet countries’ climate change policy strategies by 2030 (2035) were adopted relatively recently. Thus, the aim of this study is to analyze the achievements of climate change policy, encompassing carbon emissions, energy intensity, and renewable energy consumption, in separate Post-Soviet countries and to reveal the possibilities of reaching their long-term 2030–2035 targets. The results showed huge differences in carbon emissions, energy intensity, and the share of renewable energy consumption among Post-Soviet countries. Analyzing the trends of climate change policy implementation in almost all Post-Soviet countries (except Ukraine and Uzbekistan), carbon pollution increased during the analyzed period (2002–2014). The highest growth of emissions was observed in Georgia and Tajikistan. Furthermore, the economic development level was positively and significantly related to the level of carbon emissions. During the 2002–2014 period, energy intensity decreased in all Post-Soviet countries, particularly in those where the level was lower. The share of renewable energy consumption increased the most in countries that are members of the EU (Latvia, Lithuania, and Estonia) and Moldova, which declared its willingness to join the EU. However, the energy intensity and the share of renewable energy consumption were insignificantly related to the level of economic development. Analyzing the possibility of achieving the Post-Soviet countries’ climate change policy targets, the results showed that only some of them will succeed. Therefore, Post-Soviet countries should implement more efficient climate change policies and effective tools in order to achieve their targets.
Gamification Approaches for Education and Engagement on Pro-Environmental Behaviors: Searching for Best Practices
Authors: Ouariachi Tania , Li Chih-Yen , Elving Wim J. L.
Published: June 2020

Education is a key factor to respond to the threat of climate change, increasing not only knowledge but also encouraging changes in attitudes and behaviors to adopt sustainable lifestyles. Scholars and practitioners in the field of education call for innovative ways of engaging youth—a reason why gamification has gained more attention in recent years. This paper aims at exploring the role of gamification in affecting pro-environmental behavioral change and searching for best practices for educational purposes. For that aim, pro-environmental gamification platforms are identified and analyzed by applying two different frameworks: the Octalysis Framework and the Climate Change Engagement through Games Framework. After scanning 181 cases, a final sample of six is analyzed and two of them are selected as best practices with higher potential to engage users in pro-environmental behavioral change: SaveOhno and JouleBug. Meaning, ownership, and social influence, as well as achievability, challenge, and credibility, are seen as core elements that can increase the success of gamification platforms. In conclusion, the more attributes are enclosed in the gamification design, the stronger physical and mental connections it builds up with participants. Insights from this study can help educators to select best practices and gamification designers to better influence behavioral change through game mechanics.
The Species Composition and Distribution Patterns of Non-Native Fishes in the Main Rivers of South China
Authors: Gu Dang En , Yu Fan Dong , Hu Yin Chang , Wang Jian Wei , Xu Meng , Mu Xi Dong , Yang Ye Xin , Luo Du , Wei Hui , Shen Zhi Xin , Li Gao Jun , Tong Yan Nan , Cao Wen Xuan
Published: June 2020

Non-native fish invasions are among the greatest threats to the sustainability of freshwater ecosystems worldwide. Tilapia and catfish are regularly cultured in South China which is similar to their climate in native areas and may also support their invasive potential. We systematically collected fish from eight main rivers of South China, from 2016 to 2018, to investigate and analyse species’ composition and the distribution of non-native fishes. The data reveal that non-native fishes are widespread and abundant in the sampled rivers: of the 98,887 fish collected, 11,832 individuals representing 20 species were not native, which were distributed in the 96% sampled sites. Of the non-native fish species, 17 are used in aquaculture and 19 are native to the tropics; 13 are omnivores while the other seven are predators. Based on dissimilarity of the non-native fish species distributions across the eight rivers, the different rivers could be divided into four assemblages. Geographical isolation and temperature were identified as affecting the distribution patterns of non-native fishes, thereby influencing fish species composition, species number, dominant species, and distribution variations in the South China rivers. Species composition of the non-native fishes in these rivers are related to their introduction vector, compatibility with their native habitat, and feeding strategies. Their distribution was mainly influenced by geographical location and temperature. To mitigate the impacts of non-native fish, a series of stricter management practices, systematic monitoring, and more research are needed.
Insect Rearing: Potential, Challenges, and Circularity
Authors: Cadinu Lorenzo A. , Barra Paolo , Torre Francesco , Delogu Francesco , Madau Fabio A.
Published: June 2020

Environmental pollution, population increase, water availability and misuse of land are inexorably driving humans to take on important challenges related to sustainability. The next future is expected to see a significant increase of food and feed demands, which determines a serious threat to well-being levels and even survival of modern societies. Within this scenario, the efficient and sustainable use of insects as protein sources has been invoked as a possible strategic solution. As a candidate for remarkable growth, insect farming promises significant benefits to agri-food industry, offering interesting opportunities for implementing circular economy. In the present work, we review selected literature on insect rearing with the aim of providing a short rigorous introduction to the field to researchers, entrepreneurs and common readers. After a general overview of the field, including a description of insect nutritional values, the review focuses on the three insect species that are seemingly set to beneficially affect aquaculture, which is the activity presently more sensitive to circularity and sustainability innovation. Once traditional and advanced insect rearing methods are described, the challenges that the field is going to tackle are suitably highlighted.
Subjective Well-Being and Psychosocial Adjustment: Examining the Effects of an Intervention Based on the Sport Education Model on Children
Authors: Luna Pablo , Rodríguez-Donaire Alba , Rodrigo-Ruiz Débora , Cejudo Javier
Published: June 2020

The current study aims to evaluate the effectiveness of an intervention based on the Sport Education model, compared to an intervention based on the traditional model of Direct Instruction in children. The intervention was carried out during school hours for 18 sessions of 50-min each. The sample was made up of 146 children aged 10–12 years (M = 10.78 years; SD = 1.07 years). Participants were randomly assigned to the experimental group (n = 87) and a control group (n = 59). A quasi-experimental design with repeated pretest and posttest evaluations with the control group was implemented. The Positive and Negative Affect Scale for children and adolescents (PANASN) was used to assess the affective component of subjective well-being. The Child and Adolescent Behavior Assessment System (BASC) was used to assess psychosocial adjustment. The results showed significant improvements in the affective component of subjective well-being and a reduction in anxiety in favor of the experimental group. Our current results show the methodological and practical efficacy of a Sport Education intervention.
Electricity Use Behaviour in a High-Income Neighbourhood in Johannesburg, South Africa
Authors: Williams Stephanie Paige , Thondhlana Gladman , Kua Harn Wei
Published: June 2020

Worldwide, households’ consumption of electricity contributes to a substantial proportion of total national energy demand. Thus, the residential sector is a major entity in efforts to define and achieve global sustainability goals. Understanding electricity use behaviour and factors underlying behaviour is critical for designing behaviour change interventions, particularly in contexts characterised by fast-growing economies, burgeoning number of high-income households, and consumption growth. However, relative to developed economies, very little is known on this subject in South Africa. Using structured questionnaires, this study examines electricity use behaviour among high-income households in Johannesburg, South Africa. Findings indicate evidence of electricity-saving behaviour, but the proportion of households doing so was less than 50% for many actions, indicative of widespread wasteful habits. Other particular wasteful electricity use habits include leaving electronic gadgets and appliances on ‘standby’ mode, not turning off electric water heaters and not defrosting fridges without automatic settings. The findings lend support to the positive and negative influence of self-transcendence and egoistic values respectively on environmental behaviour, but other value orientations did not yield significant relationships. The implications of the findings on practical interventions for and theoretical constructs underlying strategies for environmentally-sustainable behaviour are discussed.
Analysis of Possibility to Apply Preharvest 1-Methylcyclopropene (1-MCP) Treatment to Delay Harvesting of Red Jonaprince Apples
Authors: Tomala Kazimierz , Grzęda Marek , Guzek Dominika , Głąbska Dominika , Gutkowska Krystyna
Published: June 2020

The production of Red Jonaprince cultivar is increasing, but the quality of apples is still challenging. Therefore, various options may be used including 1-Methylcyclopropene (1-MCP) application, as it influences ethylene receptors and blocks them, resulting in the possibility of delaying harvesting. The preharvest application of 1-MCP has not been studied so far for this cultivar but for other ones it has been successful, as it is based on the understanding of the natural apple ripening process. The study aimed to analyze the possibility of applying a 1-MCP treatment in the preharvest period for Red Jonaprince apples. The study was conducted based on a comparison of apples from two groups of Red Jonaprince apple trees (4 years) cultivated in an experimental orchard, where for one of them 1-MCP was applied in the preharvest period (HarvistaTM; 150 g per ha; 20 September—12 days before the optimum harvesting window (OHW)). For both groups, the apples were studied twice, for harvesting in the OHW (2 October) and for delayed harvesting (24 October). The harvested fruits were stored in an Ultra Low Oxygen chamber (ULO; 1.2% CO2, 1.2% O2) until May. They were analyzed before storage (preharvest) five times (20 September–24 October) and after storage (postharvest) three times (20 March–18 May). The following parameters were included: firmness, total soluble solids (TSS) content, titratable acidity (TA). For the preharvest period, the parameters also included internal ethylene content (IEC), starch index, and Streif index. For the preharvest period, significant differences associated with the 1-MCP treatment (p ≤ 0.05) were observed for the IEC (lower results for apples treated for 4th and 5th assessment), TA (higher results), and Streif index (higher results). Meanwhile, for firmness, TSS, and starch index for the majority of measurements there were no differences (p > 0.05). For the postharvest period, significant differences associated with 1-MCP treatment (p ≤ 0.05) were observed for firmness (higher results) and TA (higher results) both for OHW and delayed harvesting. It was concluded that a preharvest 1-MCP treatment allowed delayed harvesting and reduced the quality deterioration during the ULO storage of Red Jonaprince apples.
The Groups of Caroling Lads from Făgăraș Land (Romania) as Niche Tourism Resource
Authors: Sorea Daniela , Csesznek Codrina
Published: June 2020

Contemporary tourism favors niche offers and heritage tourism is successful niche tourism. The cultural mapping of Făgăraș Land (Romania), accomplished during a project conducted by Transilvania University of Brașov, highlights the groups of caroling lads as a main local resource of intangible cultural heritage. The field research indicates that during winter, celebrations of the life of rural communities are organized around the group of lads. Currently, the group only performs a ritual role, but in the past the group had community work attributes, which could be resumed. Additionally, a sustainable heritage tourism can be developed around the groups of lads from Făgăraș Land. That is a form of niche tourism based on the aforementioned concept of foster Christmas relatives. The concept was outlined during the field research carried out as part of the project and refers to host families providing tourists access to the performance of group of lads within the community during the winter celebrations. Resuming the old attributes of the group of lads along with niche tourism could contribute to the sustainable development of rural communities and building local cultural identity. Additionally, they would also consolidate the status held by group members within the community.
Least Cost Analysis for Biocorrosion Mitigation Strategies in Concrete Sewers
Authors: Fytianos Georgios , Tziolas Emmanouil , Papastergiadis Efthimios , Samaras Petros
Published: June 2020

The changing role of the municipal water and wastewater authorities, together with the need for a sustainable maintenance treatment in the sewer systems, have been the catalysts for the integration of technical and financial information into asset management systems. This paper presents results from a cost-comparative analysis focusing on an annuities calculation for the evaluation of microbiologically induced corrosion (MIC) or biocorrosion mitigation methodologies used in the maintenance of concrete sewers. The replacement cost of deteriorated sewer concrete pipes is high, and MIC mitigation methods can be used to increase the current service life of concrete pipes. From the MIC mitigation methods that are frequently used, the authors examined those of flushing with high-pressure water (i.e., a common method used in Greece), and spraying with magnesium hydroxide slurry (MHS). The authors chose four different cities for the assessment, which presented different sewer characteristics and socioeconomic backgrounds. In addition, all methods for concrete sewer MIC mitigation were compared to the present value of replacement of sewer concrete pipes with new PVC ones. Results showed that flushing with high-pressure water is very cost demanding and should be avoided, while spraying with MHS could be a sustainable and economic solution in the long term.
Health Problems of Slum Dwelling Women: An Empirical Analysis
Authors: Kulasekhar M , Dasaratharamaih K
Published: June 2020

The slum dwellers are generally suffering from various diseases with a high rate comparatively non-slum population in urban India. The women living in slum areas are mainly suffering from seasonal viral fevers, cough and cold, asthma, and other infectious diseases. The study shows that 39 % of slum women have poor health status. The reasons for poor health among slum women are malnutrition, unhygienic condition, lack of precautionary measures, and bad habits among them. About 37% of SC women, 30% each of ST and BC slum women, and 20% of OC women are frequently falling sick with various diseases. It is observed that 31% of the slum-dwelling women are getting treatment from RMP doctors, followed by 30% of slum women from private allopathy doctors, and only 18% of slum women are visiting Govt. hospital for their medical treatment. Only 29% of slum women are regularly visiting hospitals for their medical checkups. A majority of 62% of slum women have a habit of consuming alcohol and tobacco-related products, and out of them, 79% of women are facing health problems due to a habit of consuming alcohol and tobacco.
A Study on the Awareness on New Education Policy (2019) among the Secondary School Teachers in Madurai District
Authors: Maruthavanan M
Published: June 2020

National Education Policy (2019) draft released from the Government of India, and they gave two months for teachers, teacher educators, principals, and policymakers to submit their perception. The researchers want to find awareness on National Education Policy (2019) among secondary school teachers in Madurai District. In his study, he finds that mainly the awareness level is below average. He finds the awareness according to the variable Gender, Location, Type of Institution, years of service, and type of family.