bluuebunny/crossref_metadata_2025 huggingface dataset:
Career Success in University Graduates: Evidence from an Ecuadorian Study in Los Ríos Province
Authors: Pico-Saltos Roberto , Bravo-Montero Lady , Montalván-Burbano Néstor , Garzás Javier , Redchuk Andrés
Published: August 2021

Career success and its evaluation in university graduates generate growing interest in the academy when evaluating the university according to its mission and social mandate. Therefore, monitoring university graduates is essential in measuring career success in the State Technical University of Quevedo (UTEQ, acronym in Spanish). In this sense, this article aims to identify the predictive career success factors through survey application, development of two mathematical functions, and Weka’s classification learning algorithms application for objective career success levels determination in UTEQ university graduates. Researchers established a methodology that considers: (i) sample and data analysis, (ii) career success variables, (iii) variables selection, (iv) mathematical functions construction, and (v) classification models. The methodology shows the integration of the objective and subjective factors by approximating linear functions, which experts validated. Therefore, career success can classify university graduates into three levels: (1) not successful, (2) moderately successful, and (3) successful. Results showed that from 548 university graduates sample, 307 are men and 241 women. In addition, Pearson correlation coefficient between Objective Career Success (OCS) and Subjective Career Success (SCS) was 0.297, reason why construction models were separately using Weka’s classification learning algorithms, which allow OCS and SCS levels classification. Between these algorithms are the following: Logistic Model Tree (LMT), J48 pruned tree, Random Forest Tree (RF), and Random Tree (RT). LMT algorithm is the best suited to the predictive objective career success factors, because it presented 76.09% of instances correctly classified, which means 417 of the 548 UTEQ university graduates correctly classified according to OCS levels. In SCS model, RF algorithm shows the best results, with 94.59% of instances correctly classified (518 university graduates). Finally, 67.1% of UTEQ university graduates are considered successful, showing compliance with the university’s mission.
Relational and Networking Character: Threat or Savior for the Sustainability of European Erasmus+ Projects in the Times of COVID-19 Pandemic?
Authors: Poszytek Paweł
Published: August 2021

Turbulent and unstable times caused by the COVID-19 pandemic constitute specific training grounds as well as a stress test to verify in practice the validity of assumptions underlying the modern paradigms in management on the one hand, and to assess which factors contribute, or pose challenges and threats, to the resilience and sustainability of modern organizations on the other hand. Research was conducted among 990 Erasmus+ project leaders to assess to what extent the factors connected with the relational and networking characteristics of Erasmus+ projects, functioning as temporary organizations, facilitate the sustainability of European transnational cooperation projects in the times of the COVID-19 pandemic. The discussion concentrates on the digital and social dimensions of transnational cooperation and places these dimensions in the broader context of relational view and network paradigm in the modern science of management as well as in the context of strategic management. Bibliometric analysis shows that no such research has been conducted so far. Researchers tend to analyze the impact of Erasmus+ projects on regional, national, and European communities but do not touch upon the aspects connected with the management of the projects themselves, especially in the context of the COVID-19 pandemic. Consequently, this research fills a research gap in this respect.
Earthquake Response Modeling of Corroded Reinforced Concrete Hollow-Section Piers via Simplified Fiber-Based FE Analysis
Authors: Scattarreggia Nicola , Qiao Tianyue , Malomo Daniele
Published: August 2021

The effect of corrosion-induced damage on the seismic response of reinforced concrete (RC) circular bridge piers has been extensively investigated in the last decade, both experimentally and numerically. Contrarily, only limited research is presently available on hollow-section members, largely employed worldwide and intrinsically more vulnerable to corrosion attacks. In this paper, fiber-based finite element (FB-FEM) models, typically the preferred choice by practitioners given their reduced computational expense, are validated against previous shake-table and quasi-static cyclic tests on hollow-section RC columns, and then used to investigate the influence of corrosion-induced damage. To this end, modeling strategies of varying complexity are used, including artificial reduction of steel rebar diameter, yield strength and ductility, as well as that of concrete compressive strength to simulate cover loss, and ensuing dissimilarities quantified. Pushover and incremental dynamic analyses are conducted to explore impacts on collapse behavior, extending experimental results while accounting for multiple corrosion rates. Produced outcomes indicate a minimal influence of cover loss; substantial reductions of base shear (up to 37%) and ultimate displacement capacity (up to 50%) were observed, instead, when introducing relevant levels of deterioration due to corrosion (i.e., 30% rebar mass loss). Its predicted impact is generally lower when considering more simplified assumptions, which may thus yield non-conservative predictions.
Sustainability of the Artisanal and Small-Scale Gold Mining in Northeast Antioquia-Colombia
Authors: Baena Óscar Jaime Restrepo , Mendoza Luis Enrique Martínez
Published: August 2021

The aim of this work is to explain the concepts of sustainability with respect to small artisanal gold mining. For this, a qualitative approach with a descriptive scope was used, for which the bibliographic review technique was conducted. In this sense, articles, theses, books and institutional documents, and any contribution related to the research topic were taken into consideration. Likewise, this documentation contributed to the delimiting aspects that allowed a contrast between the proposed definitions and small artisanal mining in the Northeast Antioquia region in Colombia. Based on the reviewed sources, different needs were recognized in artisanal small-scale gold mining in Northeast Antioquia that still need action. In conclusion, through the exposition of sustainability theories, three common factors were identified within the various positions that were raised—the environmental, economic, and sociocultural dimensions.
CSR Level Versus Employees’ Attitudes towards the Environment
Authors: Rojek-Nowosielska Magdalena , Kuźmiński Łukasz
Published: August 2021

Are enterprises that achieve a higher level in the CSR continuum model more responsible towards the environment? This is the research problem of this paper. The purpose of the research was to identify whether (and if so, which of the independent variables (X) indicate this) there is a relationship between a higher level of CSR and more responsibility towards the environment? The basis for determining the level of CSR is a proprietary CSR continuum model, built on the basis of the CMMI maturity model and the levels of moral development were according to Kohlberg. STATISTICA 12 was used for data analysis, using the chi-square test of independence and correspondence analysis. The results of the conducted research allow to notice that, in the research sample of 417 business entities, only in the case of two pairs of variables was a significant relationship between the studied variables noticeable. Thus, the obtained results allow for a positive answer to the question posed in the research problem, but only in the case of water management and waste disposal.
Study on the Sharing Transportation Based on Game Theory
Authors: Pan Guanqiao , Jiang Hongchao , Jin Qianhui , Zhao Tianyi , Wang Jiajun , Wang Li
Published: August 2021

In order to solve the problems of mismatch between transportation resources and order volume in logistics transportation, we propose a cooperative pattern called sharing transportation to solve this problems. In this pattern, several logistics enterprises or alliances cooperate with each other and share transportation resources to achieve the goal of reducing costs and increasing income. In this paper, we set the application scene of sharing transportation to the section from the distribution center to the service outlets in the city. We first put forward the judgment function in the analysis model of cooperative pattern, and the possible cooperative pattern is divided into three kinds by constructing and solving the replication dynamic equation. Then we proposed the income allocation model by considering the functions of order quantity and overall income. Moreover, the proposed models are extended to the multi-agent game situation to realize the sharing transportation of multiple enterprises. Finally, we use the example simulation and sensitivity analysis to verify the rationality of the model. This paper provides a new idea for how to integrate the surplus resources to increase the profit in the process of logistics transportation.
An Application of a Deep Q-Network Based Dynamic Fare Bidding System to Improve the Use of Taxi Services during Off-Peak Hours in Seoul
Authors: Cho Yunji , Song Jaein , Kang Minhee , Hwang Keeyeon
Published: August 2021

The problem of structural imbalance in terms of supply and demand due to changes in traffic patterns by time zone has been continuously raised in the mobility market. In Korea, unlike large overseas cities, the waiting time tolerance increases during the daytime when supply far exceeds demand, resulting in a large loss of operating profit. The purpose of this study is to increase taxi demand and further improve driver’s profits through real-time fare discounts during off-peak daytime hours in Seoul, Korea. To this end, we propose a real-time fare bidding system among taxi drivers based on a dynamic pricing scheme and simulate the appropriate fare discount level for each regional time zone. The driver-to-driver fare competition system consists of simulating fare competition based on the multi-agent Deep Q-Network method after developing a fare discount index that reflects the supply and demand level of each region in 25 districts in Seoul. According to the optimal fare discount level analysis in the off-peak hours, the lower the OI Index, which means the level of demand relative to supply, the higher the fare discount rate. In addition, an analysis of drivers’ profits and matching rates according to the distance between the origin and destination of each region showed up to 89% and 65% of drivers who actively offered discounts on fares. The results of this study in the future can serve as the foundation of a fare adjustment system for varying demand and supply situations in the Korean mobility market.
A Sustainable Community of Shared Future for Mankind: Origin, Evolution and Philosophical Foundation
Authors: Khan Uzma , Wang Huili , Ali Ishraq
Published: August 2021

The Community of Shared Future for Mankind (CSFM) concept is a comprehensive Chinese proposal for a better future of mankind. In this article, we provide a comprehensive analysis of this concept by focusing on its origin, evolution and philosophical foundation. We show that the concept originated during the presidency of Hu Jintao, who initially used it for the domestic affairs of China. However, the usage of the concept was later extended from domestic to international affairs. Though Hu Jintao conceived the CSFM concept, it is president Xi Jinping who became its greatest advocate. We explore the CSFM concept’s development and evolution into one of the most influential, diverse and dominant concepts of international relations under president Xi. We argue that although CSFM concept is seen as a 21st century Chinese idea, the roots of the concept can be traced back to much earlier time in history. The concept is based on three major philosophical thoughts: Marxism, Confucianism and the philosophy of Mencius. We show that the CSFM concept is greatly influenced by Marx’s ideas such as the transformation of the world, the free association of producers, historical materialism and dialectics. We also point to a number of Confucian principles that are adopted by the CSFM concept. The CSFM concept not only adopts Confucian principles but also extends their scope from the individual level to international relations. Similarly, we also highlight that the CSFM concept is influenced by Mencius’ concepts such as universal brotherhood, responsibility towards the betterment of the world, humane governance, free trade, equal sharing of wealth and the conservation of natural resources.
Development and Operation Modes of Hydrogen Fuel Cell Generation System for Remote Consumers’ Power Supply
Authors: Kulikov Aleksandr , Loskutov Aleksey , Kurkin Andrey , Dar’enkov Andrey , Kozelkov Andrey , Vanyaev Valery , Shahov Andrey , Shalukho Andrey , Bedretdinov Rustam , Lipuzhin Ivan , Kryukov Evgeny
Published: August 2021

At the present stage of electric power industry development, special attention is being paid to the development and research of new efficient energy sources. The use of hydrogen fuel cells is promising for remote autonomous power supply systems. The authors of the paper have developed the structure and determined the optimal composition of a hybrid generation system based on hydrogen fuel cells and battery storage and have conducted studies of its operating modes and for remote consumers’ power supply efficiency. A simulation of the electromagnetic processes was carried out to check the operability of the proposed hybrid generation system structure. The simulation results confirmed the operability of the structure under consideration, the calculation of its parameters reliability and the high quality of the output voltage. The electricity cost of a hybrid generation system was estimated according to the LCOE (levelized cost of energy) indicator, its value being 1.17 USD/kWh. The factors influencing the electricity cost of a hydrogen generation system have been determined and ways for reducing its cost identified.
The Complex Relationship between Capacity and Infrastructure Project Delivery: The Case of the Indian National Urban Renewal Mission
Authors: An Yehyun , Hall Ralph P. , Yoon Taekwan
Published: August 2021

Capacity development (CD) interventions are becoming a vital component of development projects. However, there is a lack of information about the relationships between capacity and project delivery. This paper presents the results of a study of how CD was applied to one of India’s largest urban infrastructure programs. While the Indian government considered a lack of capacity to be the main problem in project delivery, there is little evidence that explains the relationships between capacity and project delivery. This study analyzes the content of 58 interviews with project engineers, managers, and administrators about the hurdles they experienced at each stage of project delivery and seeks to understand these hurdles through the lens of CD. The study identifies the influence of capacity factors on project delivery and the converse influence of project performance and outcomes on CD. Ultimately, this study reveals the complex two-way interactions between capacity and project delivery.
The Smart Evolution of Historical Cities: Integrated Innovative Solutions Supporting the Energy Transition while Respecting Cultural Heritage
Authors: Tsoumanis Georgios , Formiga João , Bilo Nuno , Tsarchopoulos Panagiotis , Ioannidis Dimosthenis , Tzovaras Dimitrios
Published: August 2021

Building retrofitting is seen as an efficient method for improving a building’s energy performance. On the other hand, when historical buildings are considered for this procedure, retrofitting gets more complicated. As historical buildings typically consist of low-performance building and energy systems, energy retrofits can be highly beneficial. However, not every retrofit technology can be installed in a historical building. In this paper, the study carried out for the implementation of Building-Integrated Photovoltaics (BIPV) solutions in the Historic Centre of Évora is provided, within the framework of the European project POCITYF (Project H2020). The study took into consideration all the observations of the Regional Directorate of Culture of Évora and the administration of the involved schools (including the Association of Parents), the needs of the Municipality of Évora, and the capabilities of technology developers ONYX and Tegola. The proposed solutions aim at fulfilling all the guidelines for preserving the historic centre and achieving the positivity metrics agreed with the European Commission on the challenging and indispensable path to the decarbonisation of European cities.
The Impact of the Minimum Wage on Employment: An EU Panel Data Analysis
Authors: Paun Cristian Valeriu , Nechita Radu , Patruti Alexandru , Topan Mihai Vladimir
Published: August 2021

Minimum wage laws have become one of the most debated state interventions in the economy, being considered by many specialists as a very efficient tool used to correct certain labour market failures. The aim of this paper is to explore the relationship between minimum wage and employment dynamics, with a special focus on some vulnerable categories recognized in the literature (young people, female workers, the elderly, etc.). Thus, we analysed the relation between the dynamics of minimum wages and that of employment in 22 EU countries, panel data (1999–2016). The results suggest a negative impact of the minimum wage on total employment and on sensitive categories (youth, female workers, the elderly). The long-running negative impact holds for all but one group (55–64 years). The models were tested for random and fixed effects and the results were correspondingly adjusted with country and time and random and fixed effects. Cointegration tests and the tests using lagged minimum wage also confirm a robust relationship between the dynamics of the minimum wage and that of employment over time. Our findings are consistent with many previous studies and confirm the recommendations to prudently use this public policy tool.
Recharge and Infiltration Mechanisms of Soil Water in the Floodplain Revealed by Water-Stable Isotopes in the Upper Yellow River
Authors: Wang Jiaxin , Zhang Mingjun , Argiriou Athanassios A. , Wang Shengjie , Qu Deye , Zhang Yu , Su Pengyan
Published: August 2021

The stable isotopes (δD and δ18O) in soil water allow tracing of the flow and transportation of water in the soil. However, there are few studies on the use of soil water stable isotopes to explore the soil water in the floodplain, especially in determining the soil water source and infiltration mechanism. The Bayesian mixing model (MixSIAR) was integrated with the line conditioned excess (lc-excess) of stable isotopes (δD and δ18O) in precipitation, soil water (0–150 cm), river water, and groundwater to determinate the source and recharge mechanisms of two different soil profile types in the floodplain of the upper Yellow River in Lanzhou, China. The results showed that soil water below 80 cm was affected by river water recharge, affecting soil water content and stable isotopic composition at S1 sampling points (profile parallel to river water); this effect was not observed at S2 (profile is higher than the river water) sampling points. The isotopic compositions of the soil water sources at the two sampling points (S1: δD = −77.41‰, δ18O = −11.01‰; S2: δD = −74.02‰, δ18O = −10.56‰) were depleted more than those in the long-term amount-weighted precipitation isotopes (δD = −56.30‰, δ18O = −8.17‰). The isotope signatures of soil water sources are similar to the isotope characteristics of some high-intensity precipitation events (≥30 mm/day), indicating that soil water originates from a fraction of the total precipitation. The piston flow (60%) and the preferential flow (40%) coexist, but soil moisture and rainfall intensity will affect the sequence of the two infiltration methods. This study provides insights for understanding the hydrological process of the upper Yellow River and evaluating groundwater quality and protecting the floodplain environment.
Adding Emergence and Spatiality to a Public Bad Game for Studying Dynamics in Socio-Ecological Systems (Part I): The Design of Musa-Game for Integrative Analysis of Collective Action in Banana Disease Management
Authors: Galarza-Villamar Julissa Alexandra , McCampbell Mariette , Leeuwis Cees , Cecchi Francesco
Published: August 2021

Human decision-making plays a critical and challenging role in the prevention and control of public bads within socio-ecological systems. Farmers daily confront dilemmas regarding public bad management, such as infectious diseases in their crops. Their decisions interplay with multiple factors and may create the risk conditions in which a public bad can occur (e.g., a disease outbreak). This article presents an experimental board game method (DySE) and its contextualized version (Musa-game) to study the effect of individual and collective human actions on creating or preventing a public bad. The DySE method and the Musa-game add emergence and spatiality (both attributes of SES) to the study of public bads and collective action problems. This methodological proposal allows us to build a contextual understanding of how individual and collective actions of various entities lead to typical system outcomes, i.e., conditions that are (un)favourable to pathogens, and individual decisions about infectious disease management. To conceptualize our method, we used the case of Banana Xanthomonas Wilt disease in Rwanda. This research is published as a diptych. Part I (this article) covers the conceptualization and design of Musa-game. Part II presents empirical findings from testing Musa-game with farmers in Rwanda and recommendations for using the method.
Interaction as a Central Element of Co-Creative Wine Tourism Experiences—Evidence from Bairrada, a Portuguese Wine-Producing Region
Authors: Carvalho Mariana , Kastenholz Elisabeth , Carneiro Maria João
Published: August 2021

Wine tourism experiences promote not only rural territories’ distinctive wine and food products, but also their local identity, natural and cultural resources and historical features that add value and uniqueness to tourist experiences. The new experience paradigm applied to tourism invites stakeholders to rethink how and why tourists travel and live their experiences on holidays. Interaction and engagement are components of co-creation, stressing the central role of visitors sharing value creation with other destination stakeholders. The present qualitative study uses discourses from 22 semi-structured in-depth interviews with visitors to Portugal’s Bairrada wine region. Content analysis, carried out with QRS Nvivo 12, shows that interaction enhances wine and food experiences in several contexts. Storytelling seems to contribute to value creation, with stories co-created between winemakers or other destination stakeholders and visitors. Apart from this social interaction, visitors’ physical interaction with natural and cultural destination features is also revealed as a crucial part of wine tourism experiences. Study results suggest the importance of DMOs, facilitating co-creation experiences in wine regions, contributing to visitor satisfaction and loyalty.
Valuing Cattle Manure as an Agricultural Resource for Efficiency and Environmental Sustainability
Authors: Stroheim Erich von , Hoag Dana Loyd Keske
Published: August 2021

Within a context of beef feedlots and feed-crop production systems, we surveyed farmers to identify their perceived monetary value for the manure they used or could have used. Value is contextual with respect to a number of socio-economic, environmental, regulatory, and physical factors, which influence farmer’s inclinations about how they manage manure. The most desirable manure management strategies are likely practiced by those who perceive its value highest, and, conversely, the least desirable manure management strategies are likely practiced by those who assign the lowest value to it. This study considered factors that affect or relate to farmer perceptions of manure’s value. Using quantile regression, we observed variations in how farmers perceived the value of manure, considering farm and farmer characteristics, farming practices, select preferences, and whether or not they used manure on their own cropland. For example, we found that livestock producers who grow feed for their own cattle value manure differently compared to crop producers who do not manage cattle, most likely due to perceived need. Added years of experience in farming lowered the farmer’s perception of manure’s value. Additionally, extra tillage required when using manure was seen by farmers not as a burden but rather as a benefit.
COVID-19 Countermeasures and Passengers’ Confidence of Urban Rail Travel in Bangkok
Authors: Vichiensan Varameth , Hayashi Yoshitsugu , Kamnerdsap Sudarat
Published: August 2021

Rail transit systems around the world have been suffering from heavily reduced ridership due to reduced capacity for social distancing and passengers’ concern over the risk of COVID-19 infection. Various countermeasures were implemented to reduce the COVID-19 risk so that passengers felt safe to travel on rail. The objectives of this study were to evaluate COVID-19 countermeasures of Bangkok’s urban rail from passengers’ viewpoints and examine its influence on passenger’s confidence. The background of the COVID-19 pandemic in Thailand and the rail countermeasures implemented in Bangkok were summarized. The data were obtained from an interview survey of 1105 railway passengers conducted at the stations during the second wave of the pandemic. Factor analyses and structural equation modeling were conducted. The results revealed that social distancing was not satisfied by the passengers but adversely caused inconvenience and increased infection risk when the station or rail were congested. On the other hand, the passenger temperature check, face mask enforcement, and hand sanitization countermeasures were found to highly and positively contribute to passengers’ confidence. Contact tracing application was also found to raise awareness and confidence. The findings provided insights for rail authorities and related agencies to effectively implement the countermeasures that would be practically and financially sustainable.
Optimization of MgO-GGBS Cementitious Systems Using Thermo-Chemical Approaches
Authors: Adeleke Blessing , Kinuthia John , Oti Jonathan
Published: August 2021

The current study investigated the development of a sustainable thermo-chemical approach to effectively optimize MgO-waste activated GGBS formulations, using four types of magnesium oxide (MgO) waste materials with ground granulated blast-furnace slag (GGBS) to develop binary cementitious systems (MgO-GGBS). This stems from the expected complexity of cementitious binder optimization outcomes into a simpler analytic form, enhancing the rapid delivery of optimization results and contributing to the global awareness of sustainable approaches and use of industrial wastes. Three levels of Portland cement by weight (90, 80, and 70 wt.%) was replaced with MgO wastes including an industrial by-product (GGBS) to develop an experimental regime. Investigation was carried out by employing an experiment-based optimisation technique (thermo-chemical approach), which involved the design of an experimental regime and application of experimental tests (pH measurements, thermogravimetric and derivative thermogravimetric analysis—TG/DTG and isothermal calorimetry), establishment of design variable/parameters, measurement of the design performance of the identified design parameters, and review of the relationship between the independent (control) and dependent variables (MgO wastes and their compositions). The experimental test results successfully optimised the binder compositions, established the best performing binder system (MG1), and provided an in-depth insight into the thermal stability and hydration kinetics of the investigated binder systems.
Substrate Preferences of Ruderal Plants in Colonizing Stone Monuments of the Pasargadae World Heritage Site, Iran
Authors: Hosseini Zohreh , Zangari Giulio , Carboni Marta , Caneva Giulia
Published: August 2021

Plant colonization on archaeological structures is limited by the substrate conditions of stone surfaces. Despite its relevance for ecological studies and the management plans of archaeological sites, the knowledge on monuments substrate (e.g., stones, microhabitats, microsites), which could be suitable sites for plant establishment, is an underestimated topic. Here, we aim to identify the substrate preference of plants in colonizing stone surfaces as a first step in evaluating the biodeterioration risk. We selected the Pasargadae World Heritage Site (WHS) for its variety of different conditions, and we assessed the substrate preference of 142 ruderal plants occurring on nine monuments, two types of stones, and eight microsites. Our data indicated that stone typology and microsite conditions affected species composition, diversity, and richness. The porosity of the different limestone and the progressive weathering phenomena resulted as relevant factors in plant colonization. Significantly, microsites as a junction of two stone blocks (M1a) and big fractures covered by soil (M3) hosted the most favorable conditions, which needed periodic monitoring during the maintenance activities of the site. Evaluating the substrate preference of ruderal plants can contribute to the identification of the high-risk areas for plant colonization, which need to be considered in the management plans of archaeological sites.
The Influence of Embeddedness on Entrepreneurship, Innovation and Strategy: A Gender Perspective in the Agri-Food Sector
Authors: Santos Gina , Marques Carla Susana , Ferreira João
Published: August 2021

This study aims to identify the antecedents of entrepreneurial activity in the agri-food sector of the Portuguese region of Trás-os-Montes and Alto Douro (TMAD), taking into account a gender perspective. Thus, we intend to assess whether the environment influences embeddedness, and whether embeddedness, individual entrepreneurial orientation, innovative behaviour and gender impact or influence the perceptions of feasibility and desirability as antecedents of entrepreneurial activity of entrepreneurs in the agri-food sector of the TMAD region. The measurement instrument was applied to 249 firms in the agri-food sector, created in the last 5 years. A model was conceptualised where the relationships between the constructs relating to embeddedness, IEO and EI were presented, and three control variables were subsequently added: the innovative behaviour, the environment and gender. Univariate and multivariate statistical techniques, such as structural equation modelling, were used to assess the proposed conceptual model. Thus, considering the complexity of the model under study, we performed an analysis which considered personal factors or characteristics, such as innovative behaviour, gender and IEO, as these are characteristics of the individual and may be influenced or shaped by external factors such as the context, i.e., the environment and embeddedness.
A Traceable Online Insurance Claims System Based on Blockchain and Smart Contract Technology
Authors: Chen Chin-Ling , Deng Yong-Yuan , Tsaur Woei-Jiunn , Li Chun-Ta , Lee Cheng-Chi , Wu Chih-Ming
Published: August 2021

In the current medical insurance claims process, there are problems of low efficiency and complex services. When a patient applies for medical insurance claims, he/she must go to the hospital to apply for a diagnosis certificate and receipt and then send the relevant application documents to the insurance company. The patient will not receive compensation until the company completes the verification with the patient’s hospital. However, we can improve the current dilemma through blockchain technology. Blockchain technology can effectively open up the information channels of the insurance industry and medical institutions, promote industry integration, and enhance the ability of insurance companies to obtain information. In this research, we used blockchain and smart contract technology to make the following contributions to the development of Internet insurance. First, blockchain and smart contract technology can effectively solve the problem of online underwriting. Second, it is conducive to improving supervision. Third, it is conducive to solving risk control problems. Fourth, it is conducive to effective anti-money laundering. The proposed scheme fulfills the following security requirements: mutual authentication of identities, non-repudiation between each of two roles, and other major blockchain-based security requirements. In the event of a dispute, we also proposed an arbitration mechanism to divide responsibilities.
Constructing Sports Promotion Models for an Accessibility and Efficiency Analysis of City Governments
Authors: Chen Mei-Jung , Lin Wen-Bin , Yeh Shao-Wei , Chen Mei-Yen
Published: August 2021

This study provides a systematic analysis of sports promotion efficiency in 22 administrative districts in Taiwan from 2011 to 2018. We first considered sports behavior and sports information promotion and connected the multiple intermediate products using network DEA, used the public performance and outputs to measure the total efficiency of sports promotion in the 22 administrative districts, and then established the final input–output indicators. The long-term tracking of sports promotion efficiency shows that, while Taipei and Taoyuan experienced upward trends, the other 20 administrative districts saw declining trends. We also used truncated regression to identify 14 environmental variables that affected the efficiency of sports promotion in the 22 administrative districts from 2016 to 2018, with the results showing that funding, satisfaction with life, and average BMI in each administrative district were significant factors, revealing the latest trends in and measurements of governance in terms of government accessibility.
Transportation Accessibility Evaluation of Educational Institutions Conducting Field Environmental Education Activities in Ecological Protection Areas: A Case Study of Zhuhai City
Authors: Zhou Chunshan , Zhang Dahao , He Xiong
Published: August 2021

With the development of society, an increasing number of educational institutions have adopted field environmental education activities rather than classroom education. Field education can not only enhance students’ environmental awareness but also enable them to fully understand environmental protection knowledge. Ecological protection areas are important bases for educational institutions to organize students to implement field environmental education. Focusing on Zhuhai City, this study explored spatial relationships between educational institutions and ecological protection zones using Kernel density estimation, the two-step floating catchment area method, and Thiessen polygons. Specific actions included measuring transportation accessibility and dividing the service scopes of ecological protection zones to provide field environmental education for educational institutions. These actions provided a helpful reference for educational institutions to conduct field environmental education activities effectively. The results showed the following: (1) Schools in Zhuhai City were mainly located in subdistricts and presented a spatial layout of “one primary and two secondary.” Students were mainly concentrated in villages and towns and presented a spatial layout of “one core and two centers.” Ecological protection zones were scattered in the township area; their spatial relationships with educational institutions were scattered. Meanwhile, their spatial relationship with the number of students was relatively concentrated. (2) In terms of the accessibility of educational institutions to ecological protection zones, the educational institutions in the northeast of Xiangzhou District and the middle of Doumen District had higher accessibility, while the educational institutions in the middle and south of Zhuhai City had lower accessibility, and the educational institutions in the middle of Xiangzhou District had the lowest accessibility. (3) Based on accessibility, the service scopes of field environmental education activities in ecological protection zones were divided into 15 blocks. Here, the educational institutions located in Xiangzhou District, the western part of Jinwan District, and western, middle, and eastern parts of Doumen District had relatively strong spatial dispersions with the ecological protection zones within their blocks, while the educational institutions located in the central and eastern parts of Jinwan District and northern and southern parts of Doumen District had relatively weak spatial dispersions with the ecological protection zones within their blocks.
Improvements and Evaluation on Bitter Orange Leaves (Citrus aurantium L.) Solar Drying in Humid Climates
Authors: Jorge de Jesús Chan-González , Margarita Castillo Téllez , Beatriz Castillo-Téllez , Francisco Román Lezama-Zárraga , Gerardo Alberto Mejía-Pérez , Carlos Jesahel Vega-Gómez
Published: August 2021

Dried, bitter orange leaves are widely used because of their nutritious and medicinal applications. As a result, many technologies have been used to accomplish its drying process. However, drying needs a long time and high energy demand, especially in humid climates. In this paper, bitter orange leaf drying was carried out using thermal and photovoltaic solar energy (integrated system, IS), eliminating the high humidity inside of the drying chamber to improve this process. A regular solar dryer (RD) was also used to compare the kinetics, mathematical modeling, and colorimetry study (as a quality parameter), evaluating both systems’ performances. The drying leaves’ weights were stabilized after 330 min in the RD and after 240 min in the IS, with a maximum drying rate of 0.021 kg water/kg dry matter∙min, reaching a relative humidity of 7.9%. The Page and Modified Page models were the best fitting to experimental results with an Ra2 value of 0.9980. In addition, the colorimetric study showed a better-preserved color using the IS, with an ∆E of 9.12, while in the RD, the ∆E was 20.66. Thus, this system implementation can reduce agroindustry costs by reducing time and energy with a better-quality and sustainable product, avoiding 53.2 kg CO2 emissions to the environment.
Nested Scales of Sustainable Livelihoods: Gendered Perspectives on Small-Scale Dairy Development in Kenya
Authors: Basu Pratyusha , Galiè Alessandra
Published: August 2021

The sustainability of rural development programs has often been conceptualized through the Sustainable Livelihoods Framework, or SLF. This article utilizes the SLF to examine the outcomes of small-scale dairy development in western Kenya and thus connect local perspectives on livelihoods with broader ideas of sustainable livelihoods. Drawing on individual interviews conducted with farmers in three dairy development sites in western Kenya, it examines compatibilities and contradictions between productivity and sustainability, and how gender becomes a vantage point from which the links between micro- and macro-sites, or nested scales of sustainable livelihoods, become visible. Three main kinds of benefits related to dairy development are identified by respondents: increase in income, access to market, and ability to keep improved cattle. In conjunction with these benefits, respondents identified problems related to women’s independent access to income, wider community consumption of milk, and lack of infrastructure, respectively. This study thus shows that while income and productivity is prized by all respondents, gender enables this broader goal to be viewed in more nuanced terms—not only within the household, but also through links between the household and the wider community and state. Gender thus becomes salient across the nested scales of sustainable livelihoods and provides insights into how a more encompassing notion of sustainable livelihoods can be implemented.
Hydroponic Phytoremediation of Ni, Co, and Pb by Iris Sibirica L.
Authors: Wan Shuming , Pang Jun , Li Yiwei , Li Yanping , Zhu Jia , Wang Jinsheng , Chang Ming , Wang Lei
Published: August 2021

Heavy metal pollution in mine wastelands is quite severe. Iris sibirica L., an emergent wetland plant, is characterized by an ability to survive under high stress of heavy metals. This study aimed to explore the phytoremediation ability of nickel (Ni), cobalt (Co), and lead (Pb) by Iris sibirica L. under hydroponic conditions. A series of tests were conducted at different metal stress conditions to evaluate the phytoextraction and tolerance of Iris sibirica L. The concentrations of Ni, Co, and Pb in plant shoots reached their highest values in 500 mg L−1 treatments, where they were 6.55%, 23.64%, and 79.24% higher than those in 300 mg L−1, respectively. The same concentrations in roots also reached their peak in 500 mg L−1 treatments, where they were 5.52%, 33.02%, and 70.15% higher than those in 300 mg L−1, respectively. Bioconcentration factors (BCF) for Ni, Co, and Pb revealed the phytoextraction ability of Iris sibirica L., and the translocation factors (TCF) showed that Ni may be most easily translocated in the plant, followed by Co and Pb. This study indicates that, compared with Ni and Co, Iris sibirica L. is more suitable for the phytoremediation of Pb-contaminated metal mine wastelands.
Toward Resilient Water-Energy-Food Systems under Shocks: Understanding the Impact of Migration, Pandemics, and Natural Disasters
Authors: Daher Bassel , Hamie Silva , Pappas Konstantinos , Nahidul Karim Mohammad , Thomas Tessa
Published: August 2021

The historic pandemic faced by the international community today boldly demonstrates the complexity and interconnectedness of the resource challenges we must better understand and address in the future. Further complexity is observed when accounting for the impact of compounded shocks related to natural disasters and forced migration around the world. Effectively addressing these challenges requires the development of research that cuts across disciplines and innovates at their interfaces, in order to develop multifaceted solutions that respond to the social, economic, technological, and policy dimensions of these challenges. Water, energy, and food systems are tightly interconnected. They are faced with pressures of varying natures and levels of urgency which need to be better understood, especially as nations work toward achieving the UN 2030 Agenda’s Sustainable Development Goals by 2030. This paper will review existing models and knowledge gaps related to water-energy-food (WEF) nexus models, as well as models for quantifying the impact of migration, pandemics, and natural disasters on this resource nexus. Specifically, this paper will: (1) explore the WEF nexus literature and identify gaps in current assessment tools and models; (2) explore the literature on tools and models for predicting the shocks of migration, natural disasters, and pandemics; (3) identify interconnections between water, energy, and food systems and the identified shocks; (4) develop a common framework that provides a road map for integrating those shocks in WEF nexus analysis; (5) provide recommendations for future research and policies moving forward.
Subsidy as An Economic Instrument for Environmental Protection: A Case of Global Fertilizer Use
Authors: Sane Mathy , Hajek Miroslav , Nwaogu Chukwudi , Purwestri Ratna Chrismiari
Published: August 2021

Fertilizer subsidies may constitute a key economic tool with which to provide food for the growing population. Therefore, this work aimed to (i) assess the effectiveness of subsidized chemical (NPK) fertilizer use in food production by comparing the crop output between developed and developing regions and (ii) examine the benefits of organic fertilizer and the need for its use in developing regions such as Africa. Secondary data from 2000 to 2019 on global subsidized fertilizer use, crop production, income, and other agro-environmental parameters, such as climate and soil, were collected from the international databases of the World Bank, Food and Agriculture Organization (FAO), Forest Resources Assessment (FRA), National Aeronautics and Space Administration (NASA), and World Income Inequalities Database (WID), as well as countries’ national statistics. Data were analyzed using qualitative, quantitative, and geospatial software and techniques, such as SPSS, averages, multivariate analysis, and spatial analytical Geographic Information System (GIS) tools. The results reveal that the total global fertilizer use continuously increased from 79 million tonnes in 2000 to 125 million tonnes in 2019. Subsidized fertilizer use and crop production increased with countries’ economic status. For example, countries or regions with more economic resources tended to have higher fertilizer subsidies. More than 95% of North American and European countries recorded the highest total chemical fertilizer use, ranging from 855,160 to 18,224,035 kg ha−1. In terms of organic fertilizer production, the percentage contribution in Africa relative to global production was only 2%, which was about 932,538 million tonnes below the production yield in North America. More organic fertilizer and less inorganic fertilizer should be encouraged instead of the total eradication of chemical fertilizers. This is especially applicable to developing countries, where food production is low due to poor soil and high food demand owing to a harsh environment and rapid population growth.