bluuebunny/crossref_metadata_2025 huggingface dataset:
Unpiloted Aerial System (UAS)-Supported Biogeomorphic Analysis of Restored Sierra Nevada Montane Meadows
Authors: Davis Jerry , Blesius Leonhard , Slocombe Michelle , Maher Suzanne , Vasey Michael , Christian Peter , Lynch Philip
Published: June 2020

The benefits of meadow restoration can be assessed by understanding the connections among geomorphology, hydrology, and vegetation; and multispectral imagery captured from unpiloted aerial systems (UASs) can provide the best method in terms of cost, resolution, and support for vegetation indices. Our field studies were conducted on northern Sierra montane meadows (with ≤70 km2 watershed area). The meadows exist in various stages of ecological restoration. Field survey methods included GPS + laser-leveling channel survey, cross-sections, LiDAR, vegetation sampling, soil measurements, and UAS imaging. A sensor captured calibrated blue (465–485 nm), green (550–570 nm), red (663–673 nm), near infrared (NIR) (820–860 nm), and red-edge (712–722 nm) bands at 5.5 cm resolution (as well as thermal at 81 cm resolution) and provided multispectral images and derivative vegetation indices such as the normalized difference vegetation index (NDVI) and red-edge chlorophyll index (Clre). This fine-scale imagery extended our morphometric assessment of post-restoration channel bedform patterns and sinuosity related to Carex-influenced soil properties and Salix influence, and also documented groundwater-related effects via Carex patterns evident from spring snowmelt images, as well as NDVI and Clre (derived from spring and summer images) in growing to senescent phenological stages. Carex was significantly associated with low bulk density and high soil moisture, NDVI, and Clre in low-lying areas, and channel sinuosity was significantly associated with willow influence. Our methods can be applied by restoration managers to assess where projects are threatened by renewed incision and to document levels of carbon sequestration significant to addressing climate change.
Towards Tree Green Crown Volume: A Methodological Approach Using Terrestrial Laser Scanning
Authors: Zhu Zihui , Kleinn Christoph , Nölke Nils
Published: June 2020

Crown volume is a tree attribute relevant in a number of contexts, including photosynthesis and matter production, storm resistance, shadowing of lower layers, habitat for various taxa. While commonly the total crown volume is being determined, for example by wrapping a convex hull around the crown, we present here a methodological approach towards assessing the tree green crown volume (TGCVol), the crown volume with a high density of foliage, which we derive by terrestrial laser scanning in a case study of solitary urban trees. Using the RGB information, we removed the hits on stem and branches within the tree crown and used the remaining leaf hits to determine TGCVol from k-means clustering and convex hulls for the resulting green 3D clusters. We derived a tree green crown volume index (TGCVI) relating the green crown volume to the total crown volume. This TGCVI is a measure of how much a crown is “filled with green” and scale-dependent (a function of specifications of the k-means clustering). Our study is a step towards a standardized assessment of tree green crown volume. We do also address a number of remaining methodological challenges.
Localization in Unstructured Environments: Towards Autonomous Robots in Forests with Delaunay Triangulation
Authors: Li Qingqing , Nevalainen Paavo , Peña Queralta Jorge , Heikkonen Jukka , Westerlund Tomi
Published: June 2020

Autonomous harvesting and transportation is a long-term goal of the forest industry. One of the main challenges is the accurate localization of both vehicles and trees in a forest. Forests are unstructured environments where it is difficult to find a group of significant landmarks for current fast feature-based place recognition algorithms. This paper proposes a novel approach where local point clouds are matched to a global tree map using the Delaunay triangularization as the representation format. Instead of point cloud based matching methods, we utilize a topology-based method. First, tree trunk positions are registered at a prior run done by a forest harvester. Second, the resulting map is Delaunay triangularized. Third, a local submap of the autonomous robot is registered, triangularized and matched using triangular similarity maximization to estimate the position of the robot. We test our method on a dataset accumulated from a forestry site at Lieksa, Finland. A total length of 200 m of harvester path was recorded by an industrial harvester with a 3D laser scanner and a geolocation unit fixed to the frame. Our experiments show a 12 cm s.t.d. in the location accuracy and with real-time data processing for speeds not exceeding 0.5 m/s. The accuracy and speed limit are realistic during forest operations.
Enhanced Infrared Absorbance of the CMOS Compatible Thermopile by the Subwavelength Rectangular-Hole Arrays
Authors: Chen Chi-Feng , Shen Chih-Hsiung , Yeh Yun-Ying
Published: June 2020

The enhanced infrared absorbance (IRA) of the complementary metal-oxide-semiconductor (CMOS) compatible thermopile with the subwavelength rectangular-hole arrays in active area is investigated. The finite-difference time-domain (FDTD) method considered and analyzed the matrix arrangement (MA) and staggered arrangement (SA) of subwavelength rectangular-hole arrays (SRHA). For the better cases of MA-SRHA and SA-SRHA, the geometric parameters are the same and the infrared absorption efficiency (IAE) of the SA type is better than that of the MA type by about 19.4% at target temperature of 60 °C. Three proposed thermopiles with SA-SRHA are manufactured based on the 0.35 μm 2P4M CMOS-MEMS process. The measurement results are similar to the simulation results. The IAE of the best simulation case of SA-SRHA is up to 3.3 times higher than that without structure at the target temperature of 60 °C. Obviously, the staggered rectangular-hole arrays with more appropriate geometric conditions obtained from FDTD simulation can excellently enhance the IRA of the CMOS compatible thermopile.
Feasibility Study on Measuring the Particulate Matter Level in the Atmosphere by Means of Yagi–Uda-Like Antennas
Authors: Salas-Sánchez Aarón A. , Rauch Julian , López-Martín M. Elena , Rodríguez-González J. Antonio , Franceschetti Giorgio , Ares-Pena Francisco J.
Published: June 2020

In this work, the application of a technique for monitoring changes of the dielectric constant of the atmosphere caused by the presence of pollution is discussed. The method is based on changes in the reflection coefficient of the device induced by these dielectric constant variations of the surrounding medium. To that end, several Yagi–Uda-like antenna designs with different size limitations were simulated by using a Method-of-Moments software and optimized by means of a simulated annealing strategy. It has been found that the larger the optimal elements of the array are allowed to be, the higher the sensitivity reached. Thus, in a trade-off between sensitivity and moderate length (regarding flexibility purposes), the most promising solution has been built. This prototype has been experimentally tested in presence of an artificial aerosol made of PAO (polyalphaolefin) oil and black carbon inclusions of a size of 0.2 μm. As a result, potentials for developing a measurement procedure by means of changes in the characteristic parameters of the antenna led by different concentration levels of suspended particles in the surrounding medium are shown. In this manner, a local mapping of polluted levels could be developed in an easy, real-time, and flexible procedure.
Empirical Study of Effect of Dynamic Travel Time Information on Driver Route Choice Behavior
Authors: Wang Jinghui , Rakha Hesham
Published: June 2020

The objective of this paper is to study the effect of travel time information on day-to-day driver route choice behavior. A real-world experimental study is designed to have participants repeatedly choose between two alternative routes for five origin-destination pairs over multiple days after providing them with dynamically updated travel time information (average travel time and travel time variability). The results demonstrate that historical travel time information enhances behavioral rationality by 10% on average and reduces inertial tendencies to increase risk seeking in the gain domain. Furthermore, expected travel time information is demonstrated to be more effective than travel time variability information in enhancing rational behavior when drivers have limited experiences. After drivers gain sufficient knowledge of routes, however, the difference in behavior associated with the two information types becomes insignificant. The results also demonstrate that, when drivers lack experience, the faster less reliable route is more attractive than the slower more reliable route. However, with cumulative experiences, drivers become more willing to take the more reliable route given that they are reluctant to become risk seekers once experience is gained. Furthermore, the effect of information on driver behavior differs significantly by participant and trip, which is, to a large extent, dependent on personal traits and trip characteristics.
Organic Molecules: Is It Possible to Distinguish Aromatics from Aliphatics Collected by Space Missions in High-Speed Impacts?
Authors: Burchell Mark , Harriss Kathryn
Published: June 2020

A prime site of astrobiological interest within the Solar System is the interior ocean of Enceladus. This ocean has already been shown to contain organic molecules, and is thought to have the conditions necessary for more complex organic biomolecules to emerge and potentially even life itself. This sub-surface ocean has been accessed by Cassini, an unmanned spacecraft that interacted with the water plumes ejected naturally from Enceladus. The encounter speed with these plumes and their contents, was between 5 and 15 km s−1. Encounters at such speeds allow analysis of vapourised material from submicron-sized particles within the plume, but sampling micron-sized particles remains an open question. The latter particles can impact metal targets exposed on the exterior of future spacecraft, producing impact craters lined with impactor residue, which can then be analysed. Although there is considerable literature on how mineral grains behave in such high-speed impacts, and also on the relationship between the crater residue and the original grain composition, far less is known regarding the behaviour of organic particles. Here we consider a deceptively simple yet fundamental scientific question: for impacts at speeds of around 5–6 kms−1 would the impactor residue alone be sufficient to enable us to recognise the signature conferred by organic particles? Furthermore, would it be possible to identify the organic molecules involved, or at least distinguish between aromatic and aliphatic chemical structures? For polystyrene (aromatic-rich) and poly(methyl methacrylate) (solely aliphatic) latex particles impinging at around 5 km s−1 onto metal targets, we find that sufficient residue is retained at the impact site to permit identification of a carbon-rich projectile, but not of the particular molecules involved, nor is it currently possible to discriminate between aromatic-rich and solely aliphatic particles. This suggests that an alternative analytical method to simple impacts on metal targets is required to enable successful collection of organic samples in a fly-by Enceladus mission, or, alternatively, a lower encounter speed is required.
A Particle Swarm Optimization Algorithm for the Solution of the Transit Network Design Problem
Authors: Cipriani Ernesto , Fusco Gaetano , Patella Sergio Maria , Petrelli Marco
Published: June 2020

The research presented in this paper proposes a Particle Swarm Optimization (PSO) approach for solving the transit network design problem in large urban areas. The solving procedure is divided in two main phases: in the first step, a heuristic route generation algorithm provides a preliminary set of feasible and comparable routes, according to three different design criteria; in the second step, the optimal network configuration is found by applying a PSO-based procedure. This study presents a comparison between the results of the PSO approach and the results of a procedure based on Genetic Algorithms (GAs). Both methods were tested on a real-size network in Rome, in order to compare their efficiency and effectiveness in optimal transit network calculation. The results show that the PSO approach promises more efficiency and effectiveness than GAs in producing optimal solutions.
Physical and Fitness Characteristics of Elite Professional Rugby Union Players
Authors: Posthumus Logan , Macgregor Campbell , Winwood Paul , Darry Katrina , Driller Matthew , Gill Nicholas
Published: June 2020

This study explored the physical and fitness characteristics of elite professional rugby union players and examined the relationships between these characteristics within forwards and backs. Thirty-nine elite professional rugby union players from the New Zealand Super Rugby Championship participated in this study. Body composition was measured using dual-energy X-ray absorptiometry alongside anthropometrics. Fitness characteristics included various strength, power, speed, and aerobic fitness measures. Forwards were significantly (p ≤ 0.01) taller and heavier than backs, and possessed greater lean mass, fat mass, fat percentage, bone mass, and skinfolds. Forwards demonstrated greater strength and absolute power measures than backs (p = 0.02), but were slower and possessed less aerobic fitness (p ≤ 0.01). Skinfolds demonstrated very large correlations with relative power (r = −0.84) and speed (r = 0.75) measures within forwards, while backs demonstrated large correlations between skinfolds and aerobic fitness (r = −0.54). Fat mass and fat percentage demonstrated very large correlations with speed (r = 0.71) and aerobic fitness (r = −0.70) measures within forwards. Skinfolds, fat mass, and fat percentage relate strongly to key fitness characteristics required for elite professional rugby union performance. Individual and positional monitoring is important due to the clear differences between positions.
Entrepreneurship as the Unsung Hero during the Current COVID-19 Economic Crisis: Australian Perspectives
Authors: Maritz Alex , Perenyi Aron , de Waal Gerrit , Buck Christoph
Published: June 2020

The COVID-19 pandemic has not only had a significant and catastrophic effect on business and economies globally, but has identified the external and internal enablement of new venture creation. This paper aims to provide entrepreneurship insights, implementations and dynamics to demonstrate the role of entrepreneurship in times of such adversity within an Australian context. We provide emergent enquiry narratives from leading Australian scholars, identifying entrepreneurial initiatives as a catalyst to new venture creation and growth. Narratives include insights associated with the entrepreneurial mindset, the multidimensional effects of resilience and entrepreneurship, entrepreneurship education, entrepreneurship enablers and the entrepreneurial ecosystem. Opportunities for further research are identified, particularly regarding context and empirical outcomes. We postulate that entrepreneurship may well be the unsung hero during the current COVID-19 economic crisis.
Relationship between Viewing Motivation, Presence, Viewing Satisfaction, and Attitude toward Tourism Destinations Based on TV Travel Reality Variety Programs
Authors: Kim Bo-Kyeong , Kim Kyoung-Ok
Published: June 2020

The purpose of this study was to clarify the relationship between viewing motivation for reality programs and the viewing experience (presence) during watching, viewing satisfaction after watching, and attitudes toward presented tourism destinations. While this study notes that the empirical verification of travel reality variety programs is insufficient, various discussions are presented with regard to the grip of reality variety program fever in Korea. Notably, viewers are interested in the emotional experience related to characters and tourism destinations in reality variety programs. Therefore, we asked the following questions: (1) What kind of motivation encourages viewers to watch reality variety programs? (2) How does motivation for viewing a reality variety program affect viewing satisfaction through a certain approach (presence)? (3) How does viewing satisfaction affect one’s attitude toward a program’s tourism destinations? To answer these questions, we conducted a survey of 358 viewers of travel reality variety programs. The results of this study are as follows: (1) viewing motivation for travel reality variety programs consists of five factors: vicarious gratification, entertainment, information-seeking, habitual time-spending, and socializing; (2) it was confirmed that the effect of these five factors on satisfaction was mediated by presence (viewing experience); and (3) viewing satisfaction through presence affected the subsequent attitude toward presented tourism destinations.
Green Systems Integrated to the Building Envelope: Strategies and Technical Solution for the Italian Case
Authors: Santi Giovanni , Bertolazzi Angelo , Leporelli Emanuele , Turrini Umberto , Croatto Giorgio
Published: June 2020

Green roofs and green and living walls are increasingly seen in cities, because they are an important strategy that addresses some key urban environmental issues and allows the achievement of different benefits. Among these, the most relevant ones are reduction of the “Urban Heat Island” effect, of rainfall contributions to the sewer system, of environmental impact and energy saving, and retention of harmful substance. The study aims to analyze different systems of greenery systems integrated (GSI), green roofs (GR), and green and living walls (GW-LW), as a possible retrofit technique of the envelope of heritage buildings and especially their applications in the context of historic cities in Italy, pointing out positive and negative aspects. Particularly, it pays attention to the green retrofitting of buildings and to the technical problems related to the installation of systems, since at the moment there are already several studies that show the environmental and microclimatic benefits of the integration of vegetation in architecture. This study tries to highlight the series of design procedures necessary both in the preliminary phase and then in the executive phase to relate the GSI to the existing building envelopes. The GR, from the results of the simulations conducted, demonstrate a greater simplicity in their construction, with improvements also from the point of view of the working loads on the existing structures, since the interventions are performed more easily than those on the facade. The study highlights the architectural needs that are not always considered such as the increase in the thickness of the roof and the related need to raise its edges, changing the perspective of the building. On the other hand, the GW and the LW show some complexity in their construction because they must deal with facades often rich in decorative elements and where openings affect the assemblage and connection works such as the tinsmiths of the intrados of the openings. It must be taken into consideration the necessity of having to drill masonry, often inhomogeneous, to connect fixings and the problems of stability this entails must be carefully analyzed.
New Opportunities for Cruise Tourism: The Case of Italian Historic Towns
Authors: Mangano Stefania , Ugolini Gian Marco
Published: June 2020

The cruise industry has grown worldwide in the last decades and, today, it is often associated with high levels of pollution and overtourism. This is especially true of areas where tourism cruises are a long-established sector, such as the Mediterranean and Italy in particular, where there is growing concern of the consequences of excessive pressure on popular tourist destinations. To reduce such side effects, it is necessary to develop new and sustainable tourism management policies. Our study explores the potential of the diversification of shore excursions offered by cruise lines to relieve pressure on popular destinations. As a case study, we focus on a subset of Italian villages that have received quality certifications (Bandiere arancioni and/or Borghi più belli d’Italia) because of their artistic, historical, cultural, and aesthetic values. Thanks to their proximity to major Italian ports, these villages offer opportunities for shore excursions alternative to some classic and very popular destinations such as Rome, Venice, Pisa, and Florence. The benefits of shore excursions to peripheral destinations are particularly relevant when visits include overnights.
The Role of Territorially Embedded Innovation Ecosystems Accelerating Sustainability Transformations: A Case Study of the Transformation to Organic Wine Production in Tuscany (Italy)
Authors: Chaminade Cristina , Randelli Filippo
Published: June 2020

Over the last few years, there has been a growing concern among academics and practitioners about the slow pace in which sustainability transformations unfold. While most socio-technical transformations tend to happen over extended periods, research shows that unless some dramatic changes are introduced, we are risking damaging the critical earth systems that sustain human life. In this context, understanding why and how transformations happen at a much faster pace in certain places than in others is of crucial importance. This paper investigates the rapid transformation of Panzano, from traditional wine production to organically produced wine. Using a combination of document analysis, participant observation, and face to face interviews in Panzano in 2019, this article examines the role of the territorially embedded innovation ecosystems facilitating this fast transformation. The study looks at place based-structural preconditions and different forms of agency at different stages in the transformation. Our findings illustrate that a place-based agency is paramount for accelerating sustainability transformations.
Testing the Smooth Driving of a Train Using a Neural Network
Authors: Koper Emilia , Kochan Andrzej
Published: June 2020

This article deals with the extraction of a new original parameter to characterize a railway traffic driving smoothness indicator, and its investigation is based on data obtained from a neural train emulator. This indicator of driving smoothness is an example of the sustainable value of control command and signaling technology. The pro-social and pro-environmental aspects of smooth driving are indicated and the article proposes the introduction of a new indicator for assessing the quality of rail traffic, taking into account traffic on a micro scale—the driving smoothness of a single train (also called driving flow), derived from a parameter identified in the literature—and traffic smoothness (also called traffic flow), describing traffic quality on a macro scale. At the same time, the concept of a neural train emulator is presented, providing input data to determine the value of the proposed indicator for different train models and track systems in order to test the indicator’s properties. The concept proposes the structure of an artificial neural network, the technique of obtaining test data sets and the conditions of training the network as well. An emulator based on the neural network enables the simulation of train driving, taking into account its nonlinearity and data acquisition for indicator research.
Application of Life Cycle Assessment to Lithium Ion Batteries in the Automotive Sector
Authors: Tolomeo Rosario , De Feo Giovanni , Adami Renata , Sesti Osséo Libero
Published: June 2020

This study is a critical review of the application of life cycle assessment (LCA) to lithium ion batteries in the automotive sector. The aim of this study is to identify the crucial points of the analysis and the results achieved until now in this field. In the first part of the study, a selection of papers is reviewed. In the second part of the study, a methodological approach to LCA is adopted to make clear the strengths and weaknesses of this analysis method. The lack of primary data is a crucial concern. Even if the cradle-to-grave approach is the most chosen system boundary, further scientific contribution to the life cycle inventory phase is necessary. It is likely that the more the electric vehicle becomes widespread, the more data will be accessible. Many authors have not specified the chemistry of the used batteries (5% of the studies), the software tool used (30%) or the functional unit used (17%) and, consequently, their obtained results can be questionable. However, even with the aforementioned limitations, the performed review allows us to point out the potential of electric vehicles and lithium ion batteries to reduce the overall contribution of the transportation sector to GHG emissions.
A Conceptual Model Proposal: Universities as Culture Change Agents for Sustainable Development
Authors: Dzimińska Małgorzata , Fijałkowska Justyna , Sułkowski Łukasz
Published: June 2020

This paper aims to propose a conceptual model that synthesizes the existing findings concerning universities as culture change agents for sustainable development. The model could serve as a guidance on how universities might get involved in the pro-SD activities. It also underlines the prerequisite of the quality culture that should be introduced within all the activities of universities to successfully act as culture change agents for SD. This paper builds upon the holistic and inter-disciplinary approach to demonstrate that SD does not happen in isolation and that the role of universities in its creation is significant. This study includes a literature review to contextualize the impact of universities on culture and their potential role in SD. The conclusions stemming from the literature review materialize in the proposal of the conceptual model of the university as the culture change agent for SD. The elaborated framework responds to the need for greater clarity, ordering and systematization of the role of universities in the processes of initiating, promoting and modelling the SD-oriented changes while appreciating the role of culture as an enabler, means of social change and a result of SD-focused interventions. The paper contributes to the body of knowledge by offering a novel perspective on the assumed interrelations between university, its quality culture, university main operations such as education, research and engagement with the society as well as the culture and the agency of stakeholders in the context of meeting the world’s current demands without compromising the needs of future generations.
Integrated Analysis of Energy Saving and Thermal Comfort of Retrofits in Social Housing under Climate Change Influence in Uruguay
Authors: Pereira-Ruchansky Lucía , Pérez-Fargallo Alexis
Published: June 2020

Energy improvement studies normally use energy demand reduction as an indicator, disregarding dwellings that do not use air-conditioning systems or do so only under extreme weather conditions. They also do not quantify the impact of climate change on results. This research seeks to evaluate and prioritize energy improvements for existing Uruguayan dwellings, assessing energy demand and thermal comfort in both the current and future climate. A social dwelling was monitored and calibrated to assess energy efficiency measures simulating the current climate and for 2050 (IPCC Scenario A2). The results show that improvements must be linked to the use of air-conditioning in dwellings. When air-conditioning use is unknown, for example, in public policy, thermal transmittance in walls should be between 0.50–0.61 W/m2 K, in roofs between 0.32–0.47 W/m2 K, in openings 2.7 W/m2 K, airtightness under 5 ACH n50 and with solar protections. However, when the use under free running is certain, thermal transmittance in walls and roofs should be 0.85 W/m2 K with an airtightness of 9.2 ACH n50 and solar protection used to avoid overheating. The operational ventilation and solar protection parameters were helpful to guarantee comfort, underlining the need for their inclusion and to train those who use them.
A Study on the Drift of Spray Droplets Dipped in Airflows with Different Directions
Authors: Pascuzzi Simone , Bulgakov Volodymyr , Santoro Francesco , Anifantis Alexandros Sotirios , Ivanovs Semjons , Holovach Ivan
Published: June 2020

The European Directive concerning pesticide sustainable use establishes regulations to reduce the environmental drift throughout treatments to agricultural crops, particularly in nearby sensitive areas, such as water bodies, natural reserves and urban areas. The drift represents the fraction of mixture delivered by the sprayer that is not caught by the crop, and is the clearest cause of environmental pollution. Anti-drift nozzles are usually employed, and buffer zones are also maintained along the edges of the sprayed field to reduce drift production. The aim of this work was the theoretical study of the motion of the spray droplets delivered by a nozzle, dipped in downwards and/or lateral forced air flows. A mathematical model has been developed, consisting of a system of 2nd order differential equations, to simulate the motion of water droplets of different diameters within simultaneous different directions of air flow. The graphs, obtained by means of the numerical solution of the model, allow us to analyze the level of the droplets’ drift, according to their diameter and to the speed of the lateral and the downward air flows, respectively. A lateral airflow at a speed of 5 m · s − 1 produced a drift in its direction until 1.70 m for droplets from 100 to 500 μm in diameter. For larger drops, the impact of the downward airflow is not very significant. The results obtained by the numerical solution of the mathematical model have been compared with the results of experimental tests carried out to evaluate the drift of spray produced by different nozzles.
Do Ownership Ties Increase the Optimistic Bias of Analysts’ Earnings Estimates? Evidence from Corporate Financing in the Korean Market
Authors: Chung Chune Young , Lee Euisup , Park Chang-Gyun
Published: June 2020

Previous studies argue that analysts provide optimistic estimates for corporations with which their brokerage houses have a business relationship. In this study, we investigate whether brokers with ownership ties issue optimistic estimates when their affiliates need support, as when raising debt or issuing equity. We find that Chaebol-owned brokerage houses provide optimistic earnings estimates for their affiliates relative to those provided by other brokers, especially before debt financing. However, we do not observe this relationship in the case of equity financing. These results imply that analysts with ties to corporations expect earnings management to occur around seasoned equity financing and, thus, consider the risks to their reputations. Finally, our results show that brokerage houses with ownership ties are not significantly more accurate than other brokerage houses are.
Toward the Dissemination of Sustainability Issues through Social Media in the Higher Education Sector: Evidence from an Italian Case
Authors: Gori Elena , Romolini Alberto , Fissi Silvia , Contri Marco
Published: June 2020

Nowadays, universities play a pivotal role in building a more sustainable society, promoting sustainable development by reducing the negative impacts of their activities. Accordingly, universities have been incorporating sustainability into the different dimension of their activities (i.e., campus operations, research, teaching, and community engagement). Against this backdrop, the active involvement of stakeholders is a critical element, and, in this regard, social media platforms are particularly well-suited tools thanks to their inherent dialogic features. While there are several studies on the implementation of sustainability within university activities, only a few previous researches explore whether and how such institutions use social media platforms (SM) to disclose their green initiatives and engage users. Based on this, our paper aims to fill the literature gap by exploring the case of the University of Florence. To achieve this aim, we performed a content analysis of the posts published by the university on Facebook. In contrast with prior studies which found scarce use of SM to share green activities in the higher education sector, our findings reveal that the University of Florence has been using SM to disclose their sustainability initiatives. Moreover, our results suggest that most posts are related to the community engagement dimension, while previous research pointed out prevalent attention to the environmental aspect. Finally, this research reveals a low interaction level between the university and its followers, which greatly hampers the dialogic potential of social platforms themselves.
Early Prediction of a Team Performance in the Initial Assessment Phases of a Software Project for Sustainable Software Engineering Education
Authors: Naseer Mehwish , Zhang Wu , Zhu Wenhao
Published: June 2020

Software engineering is a competitive field in education and practice. Software projects are key elements of software engineering courses. Software projects feature a fusion of process and product. The process reflects the methodology of performing the overall software engineering practice. The software product is the final product produced by applying the process. Like any other academic domain, an early evaluation of the software product being developed is vital to identify the at-risk teams for sustainable education in software engineering. Guidance and instructor attention can help overcome the confusion and difficulties of low performing teams. This study proposed a hybrid approach of information gain feature selection with a J48 decision tree to predict the earliest possible phase for final performance prediction. The proposed technique was compared with the state-of-the-art machine learning (ML) classifiers, naïve Bayes (NB), artificial neural network (ANN), logistic regression (LR), simple logistic regression (SLR), repeated incremental pruning to produce error reduction (RIPPER), and sequential minimal optimization (SMO). The goal of this process is to predict the teams expected to obtain a below-average grade in software product development. The proposed technique outperforms others in the prediction of low performing teams at an early assessment stage. The proposed J48-based technique outperforms others by making 89% correct predictions.
Social Capital and Disaster Resilience Nexus: A Study of Flash Flood Recovery in Jeddah City
Authors: Tammar Abdurazag , Abosuliman Shougi Suliman , Rahaman Khan Rubayet
Published: June 2020

Governments, researchers, and humanitarian agencies have increasingly focused on reducing disaster impacts and enhancing the resilience of individuals, households, and communities, as the human and economic costs of natural disaster events have dramatically increased over the past century. Achieving resilience in a disaster context means the ability to survive future natural disasters with minimum loss of life and property as well as the ability to create a greater sense of place among residents, a stronger, more diverse economy, and a more economically integrated and diverse population. However, less attention has been paid to the significance of social capital in a post-disaster context and its contribution in building community resilience. It is very obvious that the contribution of social capital to post-disaster resilience in a Middle Eastern/Saudi Arabian context is virtually unknown. With a focus on the Saudi Arabian context, this research paper develops a social capital framework centered on resilience and post-disaster recovery. To conduct this study, a holistic approach to data collection is followed through questionnaire surveys, structured and non-structured interviews with citizens, and informal discussions with government and major stakeholders related to flash flood disaster management in the City of Jeddah. It is interesting to note that several religious institutions have played important roles in evacuating people and providing help for a quick recovery. In addition, government organizations are taking the recovery process seriously by providing necessary help in the flood-stricken areas. Within the scope of the given framework, the research explores and evaluates the role of social capital in post-disaster recovery efforts through a case study of the 2009 and 2011 Jeddah flash floods.
Drivers and Barriers for Successful Special Economic Zones (SEZs): Case of SEZs under China Pakistan Economic Corridor
Authors: Naeem Saira , Waheed Abdul , Khan Muhammad Naeem
Published: June 2020

Over the last three decades, special economic zones (SEZs) have given new impetus to the ever-growing export-oriented industrialization in developing countries. Where various economies have benefited from SEZs, many zones have ended up becoming enclaves with trifling advantage. The SEZs in Pakistan have experienced the same fate and have failed to contribute to exports, employment, and creating linkages with the domestic economy. Recently under the China Pakistan Economic Corridor (CPEC), SEZs are proposed to be set up in Pakistan, with a hope to fuel the stuttering economy. However, it is pertinent first to understand the local context and device policies considering stakeholders’ perspectives. This study aims to identify the factors for the successful implementation of SEZs derived from the regional context of Pakistan. In-depth interviews are conducted from the most relevant stakeholders, who have been involved in the development of SEZs. The results pointed towards the removal of political influence over zones and government taking the lead role in deciding the types of industry to be invited in these zones. Each zone should have a clear vision of development based on its locational advantage. The zone promotions should be based on competitiveness rather than fiscal incentives. Joint ventures and PPP should be encouraged inside the zones for sustainable operations.
Physical Activity and Social Cognition in the Elderly
Authors: Alarcón-Jiménez Juan José , Nielsen-Rodríguez Adriana , Romance Ramón , Gómez-Huelgas Ricardo , Bernal-López M. Rosa
Published: June 2020

Social cognition is related to the so-called “Theory of the mind” and refers to the ability to understand the behavior of other people. It plays a transcendental role in the social relations cohesion. Knowing whether normal aging is associated with deficiencies in social understanding is a problem in characterizing the changes that occur in adulthood. The aim of this study was to examine whether the social cognition of the elderly is mediated by factors such as working memory, physical activity, body composition, or age, in elderly people. Sixty volunteers (mean age, 71.50 ± 4.84 years) were recruited from various locations in Malaga. Recognition of emotional expression, working memory, body composition, and physical activity were evaluated. Our results show that performance in emotion recognition is not affected by age in the range studied. Furthermore, we have not found a relationship with any of the body composition parameters. However, a significant relationship with performance in working memory has been revealed, as well as a significant relationship between vigorous/very vigorous physical activity and working memory. Therefore, physical activity could be positively related to the recognition of emotions by positively influencing working memory.
Social Entrepreneurship and Sport in Romania: How Can Former Athletes Contribute to Sustainable Social Change?
Authors: Constantin Pompiliu-Nicolae , Stanescu Rares , Stanescu Monica
Published: June 2020

Social entrepreneurship is an underrated subject in the field of sports. For Romanian society, the fall of communism opened up new opportunities in the entrepreneurial domain. At the same time, entrepreneurship began to intersect with sports, and the results were often productive. Sport is seen as a domain that could inspire entrepreneurship through its principles. The similarities between these two fields have created the perspective of common action in sport and entrepreneurship, and this coexistence has improved during times of social change. After 1989, Romania was confronted with many challenges at the societal level, and sport offered a way to address and to tackle social problems. Through sport, some athletes decided to contribute to issues of individuals or communities. They assumed the status of a social entrepreneur, and developed activities that could inspire others. This paper intends to gather examples of such social entrepreneurship from Romania, and to identify the elements that lead to success. The research takes into consideration case studies from various domains, and this diversity helps us to better understand the challenges of Romanian sport when it interacts with social entrepreneurship.
Online Grocery Shopping by NYC Public Housing Residents Using Supplemental Nutrition Assistance Program (SNAP) Benefits: A Service Ecosystems Perspective
Authors: Cohen Nevin , Tomaino Fraser Katherine , Arnow Chloe , Mulcahy Michelle , Hille Christophe
Published: June 2020

This paper examines adoption of online grocery shopping, and potential cost and time savings compared to brick and mortar food retailers, by New York City public housing residents using Supplemental Nutrition Assistance Program (SNAP) benefits. A mixed methods action research project involving the co-creation of an online shopping club, the Farragut Food Club (FFC), recruited 300 members who registered to shop online using SNAP, and received waivers on delivery minimums and provided technical assistance and centralized food delivery. We conducted a survey (n = 206) and focus groups to understand shopping practices; FFC members collected receipts of groceries over two weeks before and after the pilot to measure foods purchased, stores patronized, and prices. We interviewed FFC members to elicit experiences with the pilot, and estimated cost differences between products purchased in brick and mortar stores and equivalent products online, and transportation time and cost differences. Online shopping represented a small (2.4%) percentage of grocery spending. Unit prices for products purchased on Amazon ($0.28) were significantly higher than for equivalent products purchased in brick and mortar stores ($0.23) (p < 0.001.) Compatibility with existing routines, low relative advantage, and cost of online products limited the adoption of online shopping among SNAP users.
Structural Change in Central and South Eastern Europe—Does Technological Efficiency Harm the Labour Market?
Authors: Novák Zsuzsanna
Published: June 2020

According to Kuznets, modern economic growth entails structural change. The share of the broad economic sectors (agriculture, manufacturing and services), in value added and employment, has undergone a significant transformation also in the post socialist Central Eastern European and the South Eastern European economies, just like in the developed countries with somewhat lower dominance of the service sector. This phenomenon was widely explained by economists through technological development having a characteristically negative impact on employment within the same industry in which it is adopted. As preceding empirical research focused mainly on developed industrial countries including old EU member states, the purpose of this paper is to examine structural change in 13 Central and South Eastern European EU member economies with special emphasis on the impact of own-industry productivity on employment with OLS and GMM panel regressions. This paper reveals that the productivity increase in all the sectors goes together with the decrease in employment within the sectors in the case of OLS estimations, whereas it produces less evident results in the GMM model framework when controlled for other sectors’ and countries’ productivity and employment processes. Involving further country-, time- and industry-specific variables in the regression, we find that it is mostly manufacturing that is negatively hit by these additional factors (such as relatively higher openness or EU level investment activity) whereas productivity does not necessarily harm the sustainability of workplaces in this sector. The paper also ascertains that there is a large diversity among the selected emerging European economies with regard to economic structures.
School Climate and Peer Victimization. Involvement, Affiliation and Help Perceived in School Centers as Protective Factors against Violent Behavior in Adolescent Couples
Authors: Ruiz-Narezo Marta , Santibáñez Gruber Rosa
Published: June 2020

This article presents the results of a non-experimental, quantitative cross-sectional study conducted on an adolescent group. The sample of adolescents was acquired from high schools and vocational training, where the relationship between the school climate, more specifically, the involvement, affiliation, and perception of help and violence that is both experienced and exercised between partners. The study sample consisted of 433 adolescents aged 12–19 years from four educational centers from a municipality of Greater Bilbao. Since there are analyses that refer specifically to romantic relationships, in those cases, the 67.7% (N = 275) of the sample that claims to have or have had a romantic relationship is considered. Finally, there was evidence to suggest the existence of influence between the school climate and the implication of violence in adolescent couples.
Street Network Resilience Put to the Test: The Dramatic Crash of Genoa and Bologna Bridges
Authors: Cutini Valerio , Pezzica Camilla
Published: June 2020

Various hazards and endemic threats are increasingly looming over cities, leading planners to rely on a rich toolbox of flexible and inclusive planning instruments and methods, capable of dealing with unpredicted events or sudden urban contingencies, when seeking sustainable urban futures. While sustainability-oriented innovative planning approaches are gaining momentum, ways to embed connected concepts in operational planning and design decision support systems have yet to be fully developed and validated. This paper tackles this issue by proposing and testing, in a real-life scenario, a method for the computational analysis of street network resilience, based on Space Syntax theory. The method is suitable to quantify the capacity of urban grids to absorb sudden disturbances and adapt to change, and to offer support for mitigation decisions and their communication to the public. It presents a set of configurational resilience indices, whose reliability is qualitatively assessed considering the ex-ante and ex-post urban configurations generated by two exceptional and dramatic bridge crashes. These events occurred almost simultaneously in two Italian cities with peculiarly similar characteristics. The results confirm the value of the proposal and highlight urban form, and particularly its grid, as a key driver in building urban resilience, together with the self-organisation capacity of local communities.
The Impact of Geographical Indications on Sustainable Rural Development: A Case Study of the Vietnamese Cao Phong Orange
Authors: Hoang Giang , Le Ha Thu Thi , Nguyen Anh Hoang , Dao Quyen Mai Thi
Published: June 2020

This study investigates the relationship between geographical indications (GIs) and sustainable rural development in Vietnam, and analyzes the case study of the Cao Phong orange. Qualitative data were collected from interviews with Vietnamese policy-makers and orange growers to investigate the role of the government of Vietnam in designing and implementing GIs, as well as the involvement of local producers taking advantage of GIs, in order to identify how and to what extent GI protection affects sustainable rural development. The results show that GIs have positively contributed to sustainable rural development in Vietnam; however, some problems remain. This study concludes with policy implications for promoting GIs and sustainable rural development in Vietnam.