bluuebunny/crossref_metadata_2025 huggingface dataset:
Spatio-Temporal Patterns of Fitness Behavior in Beijing Based on Social Media Data
Authors: Tian Bin , Meng Bin , Wang Juan , Zhi Guoqing , Qi Zhenyu , Chen Siyu , Liu Jian
Published: March 2022

Fitness is an important way to ensure the health of the population, and it is important to actively understand fitness behavior. Although social media Weibo data (the Chinese Tweeter) can provide multidimensional information in terms of objectivity and generalizability, there is still more latent potential to tap. Based on Sina Weibo social media data in the year 2017, this study was conducted to explore the spatial and temporal patterns of urban residents’ different fitness behaviors and related influencing factors within the Fifth Ring Road of Beijing. FastAI, LDA, geodetector technology, and GIS spatial analysis methods were employed in this study. It was found that fitness behaviors in the study area could be categorized into four types. Residents can obtain better fitness experiences in sports venues. Different fitness types have different polycentric spatial distribution patterns. The residents’ fitness frequency shows an obvious periodic distribution (weekly and 24 h). The spatial distribution of the fitness behavior of residents is mainly affected by factors, such as catering services, education and culture, companies, and public facilities. This research could help to promote the development of urban residents’ fitness in Beijing.
When Reality Kicks In: Exploring the Influence of Local Context on Community-Based Design
Authors: Klerks Gwen , Slingerland Geertje , Kalinauskaite Indre , Hansen Nicolai Brodersen , Schouten Ben
Published: March 2022

Social sustainability is becoming an increasingly important topic in design practice, calling for more contextual perspectives on the process of design for social sustainability. This paper presents a retrospective case study analyzing the design process of a serious game which aimed to empower teenagers to organize events to strengthen community bonds. The community context in which the collaborative project took place underwent significant contextual changes due to the COVID-19 pandemic. Analysis using the Ecologies of Contestation framework shows the influence of multiple contextual levels (Socio-cultural, Power, Constructed, and Values-based) on the design process. Moreover, the paper discusses multiple contextual factors which influenced the design process and presents four suggestions for designers to anticipate and benefit from dynamics in these contextual elements. The suggestions regard (1) integrating the temporal dimension in the collaborative design processes, (2) carefully considering (value) alignment between actors, (3) leveraging values in the collaborative design process, and (4) acknowledging and responding to the multilayered nature of communities throughout the design process. As such, this paper explores the relationships between the community context and the collaborative design process to contribute to more resilient design practices.
Structural Equation Model of Factors Influencing the Selection of Industrial Waste Disposal Service in Cement Kilns
Authors: Suksanguan Ukrit , Siwadamrongpong Somsak , Champahom Thanapong , Jomnonkwao Sajjakaj , Boonyoo Tassana , Ratanavaraha Vatanavongs
Published: March 2022

Industrial waste disposal in a cement kiln is an operation that includes waste disposal as well as the conversion of waste into renewable energy, which is a cement industry in many countries. This research studied business factors related to the intention to use co-processing industrial waste disposal service in cement kilns by surveying the data with questionnaires from 1251 customers nationwide. The objectives of this research were to study the relationship of business factors by using structural equation modeling to analyze factors influencing the selection of industrial waste disposal service in cement kilns. The study results found that customer attitude towards the following factors, including perceived ease of use, perceived usefulness, disposal price, service provider location, promotion, people, and a service provider’s infrastructure, influenced intention to use the service. The variables that customers gave importance to were the industrial waste disposal with zero wastes to landfill and the use of industrial waste relevant to the circular economy by using the industrial waste, which has a quality of renewable fuel in cement kiln as the renewable fuel of the cement furnace. According to the research results, service providers in cement kilns can potentially plan service strategies to achieve sustainability for further business operations in a highly competitive market.
Design Thinking and Urban Community Development: East Bangkok
Authors: Gozzoli Pattarachit Choompol , Rongrat Theerada , Gozzoli Roberto Bruno
Published: March 2022

This research focuses on community development and ways in which community members can express their opinions and maintain well-being. However, in many contexts, these voices have been enfeebled through top-down approaches, lack of a concrete scenario, and attention to community problems, all of which are frequently associated with prejudices based on social status, education, or gender. For the first time within an urban context, the Ban Bu/Wat Suwannaram community in Bangkok, Thailand, has been given the opportunity to voice their opinions about the community, the direction it should take, and the overall improvement to be made, without the constriction of external authorities. This study applies design thinking, which despite being one of the major trends in business over the last couple of decades, is not generally used to address social issues. Since design thinking requires data collection and the creation of a model/prototype, two complementary procedures are employed. Firstly, the community is studied through observation and interviews, which helped creating a SWOT analysis to identify its potential and facilitate an informal discussion with members of the local community on the situation before urbanisation loosened community ties. After this initial stage, a prototype for various areas of community development is discussed in a community workshop to enable participants to offer their opinions on how the community could develop further. The results reveal the aspirations of the local community towards improving social and environmental issues.
Towards the Achievement of Frugal Innovation: Exploring Major Antecedents among SMEs
Authors: Nassani Abdelmohsen A. , Sinisi Crenguta , Mihai Daniela , Paunescu Loredana , Yousaf Zahid , Haffar Mohamed
Published: March 2022

The study in hand investigates the impact of the Internet of things (IoT) and digital platforms on frugal innovation. Furthermore, we also tested the intervening role of digital platforms and moderating role of organizational readiness. Data were collected from SMEs and the collected data were analyzed with various statistical techniques. Findings shown that the IoT positively affects digital platforms and frugal innovation. Results proved that digital platforms mediate the association between the IoT and frugal innovation. Furthermore, organizational readiness also moderates on the association between digital platforms and frugal innovation. The findings revealed that only those businesses that update their business operations according to the needs of their customers can achieve success. Frugal innovation is an emerging concept, and its achievement is a very tricky and complex task. This study shows that only those businesses that update their business operations using the IoT and digital platforms can achieve success. Moreover, modern SMEs should be able to adapt to the required changes in their business activities. Hence, SMEs also require some strategic changes in their operations in order to cope with changing business circumstances.
Barkhausen Noise as a Reliable Tool for Sustainable Automotive Production
Authors: Kubjatko Tibor , Mičieta Branislav , Čilliková Mária , Neslušan Miroslav , Mičietová Anna
Published: March 2022

This paper deals with the sustainable production of components in the automotive industry, with the focus on the nondestructive evaluation of components after plasma nitridation via the Barkhausen noise technique. This study investigates the influence of tool wear on surface state after turning, and the consecutive plasma nitriding process. Moreover, position in the nitriding chamber and the corresponding heterogeneity of components is investigated as well. The results of experiments indicate that an increasing mechanical and thermal load due to flank wear and the associated process dynamics negatively affects the heterogeneity of the surface state after turning, and consecutive nitriding in terms of Barkhausen noise emission. Moreover, it was found that the conditions in the chamber during the nitriding process vary and, especially near the venting system, the temperature is slightly lower, such that some components are found to be unacceptable as well. The study also unwraps the contribution of the diffusion and compound layers with respect to MBN and discusses the contribution of the MBN pulses of different frequencies. The pinning strength of nitrides is indicated with respect to their size and the related thickness of DWs. Finally, this study clearly demonstrates how the MBN technique can be employed for the monitoring nitrided components and the corresponding optimisation of manufacturing cycles.
The Activity and Gene Expression of Enzymes in Mycelia of Pleurotus Eryngii under Cadmium Stress
Authors: Huang Xiao-Hui , Xu Ning , Feng Li-Guo , Lai Deng-Ni , Wu Fang , Xu Dong , Guo Xin
Published: March 2022

Cadmium (Cd) is a highly toxic pollutant and a nonessential element for plant growth. Here, we investigated the levels of malondialdehyde (MDA), H2O2, sugars, and the activity and gene expression of antioxidant enzymes and sugar metabolism-related enzymes in the mycelia of Pleurotus eryngii grown in the presence of 0, 0.5, 1, 1.5, 2.0, and 4.0 mg·L−1 Cd. Raising Cd concentration resulted in increases, followed by decreases in the levels of malondialdehyde (MDA) and H2O2 in the mycelia. The maximum concentrations of MDA and H2O2 reached 318.61 and 7411.40 μmol·L−1, respectively, at a Cd concentration of 1 mg·L−1. Antioxidative enzymes (superoxide dismutase (SOD), catalase, glutathione peroxidase (GPX), and ascorbate peroxidase (APX)) activities peaked at 1 mg·L−1 Cd. Furthermore, Pleurotus eryngii produced trehalose, glucose, fructose, and maltose in the fermentation broth in response to Cd stress. The levels of trehalose, arabinose, and fructose in the fermentation broth decreased continuously. The levels of glucose increased continuously, whereas those of maltose first increased and then decreased. Gene expression level of chitin synthase, glucose-1-phosphate uridyl transferase peaked significantly at 2 mg·L−1 of Cd, while that of trehalase 2 is 0.5 mg·L−1, and those for fructose-diphosphate aldolase, glyceraldehyde-3-phosphate dehydrogenase, reached the maximum at 4 mg·L−1.
Enhancing the Assessment of Cleaner Production Practices for Sustainable Development: The Five-Sector Sustainability Model Applied to Water and Wastewater Treatment Companies
Authors: Giannetti Biagio , Sevegnani Fábio , García Roberto , Agostinho Feni , Almeida Cecília , Coscieme Luca , Liu Genguyan , Lombardi Ginevra
Published: March 2022

The world’s water resources are under pressure due to human activities. The challenges surrounding water resources management include enhancing long-term water security and minimizing undesirable economic, social, and environmental impacts, along with the production chain. Since water and wastewater treatment plants are designed to maintain and conserve freshwater provisioning services, understanding how they operate—prior to proposing options for sustainability—is of paramount importance. The diagnostic phase calls for scientifically-based, systemic, and more objective methods to provide information for decision-makers regarding strategic management of water resources. This work applied the FIVE SEctor SUstainability (5SEnSU) model to assess twenty major water and wastewater treatment companies (WWTC) in Brazil, to quantify sustainability levels that allowed ranking procedures, and to establish benchmarks for improvements. On a comparative basis, the results identified the top-three sustainable companies—CORSAN, CASAN, and SANEPAR—which should be considered as examples of best practices. Specifically, the following best-ranked companies in each sector within 5SEnSU should be used as benchmark patterns for more oriented best practices: SANEAGO, sector 1; AGESPISA, sector 2; CORSAN, sector 3; CASAL, sector 4; MA, sector 5. This work contributes toward the advancement of sustainability assessment modeling in human-managed systems (applied in WWTCs in this present study) from systemic- and epistemologically-rooted approaches, avoiding shortcomings and misleading discussions on the sustainability issue. Quantifying sustainability of WWTCs using the 5SEnSU model allows for the identification of those sectors/indicators that require immediate cleaner production practices by decision-makers, to improve overall sustainability, as well as to identify which companies are more aligned with the requirements of UN SDGs. The decision-makers would be able to visualize balanced or unbalanced relationships among all sectors and propose actions that would improve the performance in a given sector, realizing what effects a given action would cause in the other sectors of the system.
Assessing Environmental Performance of Micromobility Using LCA and Self-Reported Modal Change: The Case of Shared E-Bikes, E-Scooters, and E-Mopeds in Barcelona
Authors: Felipe-Falgas Pol , Madrid-Lopez Cristina , Marquet Oriol
Published: March 2022

Micromobility is often thought of as a sustainable solution to many urban mobility challenges. The literature to date, however, has struggled to find consensus on the sustainability of shared and electric scooters, e-bikes, and e-mopeds. This paper uses a Life Cycle Assessment (LCA) approach to calculate the impacts of micromobility modes in three categories: Global Warming Potential (GWP), Particulate Matter Formation, and Ozone Formation. It does so by incorporating the self-reported modal change of each transportation mode: shared e-moped, shared e-bicycle, shared bicycle, and personal e-scooter. The results show that modal change brought by the introduction of shared e-mopeds and shared e-bicycles caused an increase in greenhouse gas (GHG) emissions, while shared bicycles and personal electric scooters decreased GHG emissions. All micromobility modes except personal e-scooters increased particulate matter emissions, but decreased those which were emitted within the city, while they all decreased NOx. The findings of this study suggest new micromobility services are not always the best environmental solution for urban mobility, unless the eco-design of vehicles is improved, and they are strategically used and deployed as part of a holistic vision for transport policy.
SVC Parameters Optimization Using a Novel Integrated MCDM Approach
Authors: Shaaban Shaaban M. , Mesalam Yehya I.
Published: March 2022

Nowadays, multi-criteria decision-making (MCDM) methods are used widely in many fields of research and applications. Many studies have shown that MCDM approaches are effective in determining the optimal solution to a variety of symmetrical and asymmetrical problems with numerous parameters. This article investigates a novel approach using multi criteria decision making (MCDM) to optimize the parameters of static var compensator (SVC) and power system stabilizers (PSS). The proposed technique integrates similarity membership function reduction algorithm (SMFRA), removal effects of criteria (REC) and combined compromise solution (CoCoSo). In the first stage, (SMFRA) is employed to select the most dominant controller parameters in the optimization process. Secondly, the weights of the reduced parameters are computed based on (REC). Finally, (CoCoSo) method searches for the optimal setting parameters. A detailed sensitivity analysis is presented to evaluate the obtained results. It is found that the suggested integrated technique is time saving, easily implemented and of low computation burden, which can successfully be implemented to solve a wide range of issues, both comparable and dissimilar.
Cytotoxicity of Mycotoxins and Their Combinations on Different Cell Lines: A Review
Authors: Skrzydlewski Paweł , Twarużek Magdalena , Grajewski Jan
Published: March 2022

Mycotoxins are secondary metabolites of molds and mainly produced by species of the genera Aspergillus, Penicillium and Fusarium. They can be synthesized on the field, during harvest as well as during storage. They are fairly stable compounds and difficult to remove. Among several hundreds of mycotoxins, according to the WHO, ochratoxin A, aflatoxins, zearalenone, deoxynivalenol, patulin, fumonisins as well as T-2 and HT-2 toxins deserve special attention. Cytotoxicity is one of the most important adverse properties of mycotoxins and is generally assessed via the MTT assay, the neutral red assay, the LDH assay, the CCK-8 assay and the ATP test in different cell lines. The apoptotic cell ratio is mainly assessed via flow cytometry. Aside from the assessment of the toxicity of individual mycotoxins, it is important to determine the cytotoxicity of mycotoxin combinations. Such combinations often exhibit stronger cytotoxicity than individual mycotoxins. The cytotoxicity of different mycotoxins often depends on the cell line used in the experiment and is frequently time- and dose-dependent. A major drawback of assessing mycotoxin cytotoxicity in cell lines is the lack of interaction typical for complex organisms (for example, immune responses).
Does the GRB Duration Depend on Redshift?
Authors: Horvath Istvan , Racz Istvan I. , Bagoly Zsolt , Balázs Lajos G. , Pinter Sandor
Published: March 2022

Several hundred gamma-ray burst (GRB) redshifts have been determined to date. One of the other important properties—besides the distance—of the GRBs is the duration of the burst. In this paper, we analyse these two important quantities of the phenomena. In this paper, we map the two-dimensional distribution and explore some suspicious areas. As it is well known that the short GRBs are closer than the others, we search for parts in the Universe where the GRB duration is different from the others. We also analyse whether there are any ranges in the duration where the redshifts differ. We find some suspicious areas, however, no other significant region was found than the short GRB region.
Plasma Total Antioxidant Capacity and Carbonylated Proteins Are Increased in Pregnant Women with Severe COVID-19
Authors: Solis-Paredes Juan Mario , Montoya-Estrada Araceli , Cruz-Rico Adriana , Reyes-Muñoz Enrique , Perez-Duran Javier , Espino y Sosa Salvador , Garcia-Salgado Victor Ranferi , Sevilla-Montoya Rosalba , Martinez-Portilla Raigam Jafet , Estrada-Gutierrez Guadalupe , Gomez-Ruiz Juan Alexander , Mateu-Rogell Paloma , Villafan-Bernal Jose Rafael , Rojas-Zepeda Lourdes , del Carmen Perez-Garcia Maria , Torres-Torres Johnatan
Published: March 2022

Oxidative stress (OS) induced by SARS-CoV-2 infection may play an important role in COVID-19 complications. However, information on oxidative damage in pregnant women with COVID-19 is limited. Objective: We aimed to compare lipid and protein oxidative damage and total antioxidant capacity (TAC) between pregnant women with severe and non-severe COVID-19. Methods: We studied a consecutive prospective cohort of patients admitted to the obstetrics emergency department. All women positive for SARS-CoV-2 infection by reverse transcription-polymerase chain reaction (RT-qPCR) were included. Clinical data were collected and blood samples were obtained at hospital admission. Plasma OS markers, malondialdehyde (MDA), carbonylated proteins (CP), and TAC; angiogenic markers, fms-like tyrosine kinase-1 (sFlt-1) and placental growth factor (PlGF); and renin-angiotensin system (RAS) markers, angiotensin-converting enzyme 2 (ACE-2) and angiotensin-II (ANG-II) were measured. Correlation between OS, angiogenic, and RAS was evaluated. Results: In total, 57 pregnant women with COVID-19 were included, 17 (28.9%) of which had severe COVID-19; there were 3 (5.30%) maternal deaths. Pregnant women with severe COVID-19 had higher levels of carbonylated proteins (5782 pmol vs. 6651 pmol; p = 0.024) and total antioxidant capacity (40.1 pmol vs. 56.1 pmol; p = 0.001) than women with non-severe COVID-19. TAC was negatively correlated with ANG-II (p < 0.0001) and MDA levels (p < 0.0001) and positively with the sFlt-1/PlGF ratio (p = 0.027). Conclusions: In pregnant women, severe COVID-19 is associated with an increase in protein oxidative damage and total antioxidant capacity as a possible counterregulatory mechanism.
Correlations between Circulating and Tumor-Infiltrating CD4+ T Cell Subsets with Immune Checkpoints in Colorectal Cancer
Authors: Al-Mterin Mohammad A. , Murshed Khaled , Elkord Eyad
Published: March 2022

T regulatory cells (Tregs) play different roles in the regulation of anti-tumor immunity in colorectal cancer (CRC), depending on the presence of different Treg subsets. We investigated correlations between different CD4+ Treg/T cell subsets in CRC patients with immune checkpoint-expressing CD4+ T cells. Positive correlations were observed between levels of different immune checkpoint-expressing CD4+ T cells, including PD-1, TIM-3, LAG-3, and CTLA-4 with FoxP3+ Tregs, Helios+ T cells, FoxP3+Helios+ Tregs, and FoxP3+Helios− Tregs in the tumor microenvironment (TME). However, negative correlations were observed between levels of these immune checkpoint-expressing CD4+ T with FoxP3−Helios− T cells in the TME. These correlations in the TME highlight the role of cancer cells in the upregulation of IC-expressing Tregs. Additionally, positive correlations were observed between levels of FoxP3+ Tregs, Helios+ T cells, FoxP3+Helios+ Tregs, and FoxP3+Helios− Tregs and levels of CD4+CTLA-4+ T cells and CD4+PD-1+ T cells in peripheral blood mononuclear cells (PBMCs) and normal tissue-infiltrating lymphocytes (NILs). These observations suggest that CTLA-4 and PD-1 expressions on CD4+ T cell subsets are not induced only by the TME. This is the first study to investigate the correlations of different FoxP3+/−Helios+/− T cell subsets with immune checkpoint-expressing CD4+ T cells in CRC patients. Our data demonstrated strong correlations between FoxP3+/Helios+/− Tregs but not FoxP3−Helios+/− non-Tregs and multiple immune checkpoints, especially in the TME, providing a rationale for targeting these cells with highly immunosuppressive characteristics. Understanding the correlations between different immune checkpoints and Treg/T cell subsets in cancer patients could improve our knowledge of the underlying mechanisms of Treg-mediated immunosuppression in cancer.
Manganese Pollution in Mining-Influenced Rivers and Lakes: Current State and Forecast under Climate Change in the Russian Arctic
Authors: Matveeva Vera A. , Alekseenko Alexey V. , Karthe Daniel , Puzanov Alexander V.
Published: March 2022

Mining regions in different parts of the world have been associated with the significant pollution of water, sediments, and soils by manganese and other chemical elements. This study assessed the degree of geochemical transformation caused by open-pit extraction and processing of mineral resources in the Kovdorsky District of Murmansk Oblast, 20 km from the Russia–Finland border. A second objective was to predict further changes co-driven by industrial pressure and high climatic instability in the polar region. The field study involved sampling water and sediments from virgin background streams and from the tailings storage facility, settling ponds, rivers, and lakes affected by ore mining and disintegration. Laboratory analyses included the study of elemental composition, redox potential, alkalinity and acidity, organic matter content, and other geochemical characteristics for a better understanding of pollutant migration patterns. We revealed elevated levels of potentially toxic elements in surface waters and bottom sediments which pose a risk to the human health via the household and drinking water supply. Pollution with manganese (Mn) was found to be the major environmental issue. Its natural presence in the river water was overridden a hundredfold by anthropogenic enrichment. This is problematic as Mn is easily bioaccumulated, which can lead to unwanted ecotoxicological effects, and—in the case of prolonged exposure to high doses of Mn and its compounds—to detrimental human health impacts. We believe that the changing climate may raise the water flow and thus expand the area of the hydrochemical anomaly. On the other hand, the activation of self-purification and dilution processes could lead to decreasing environmental Mn concentrations.
Analysis of Alterations of the Hydrological Situation and Causes of River Runoff in the Min River, China
Authors: Guo Wenxian , Zhou Haotong , Jiao Xuyang , Huang Lintong , Wang Hongxiang
Published: March 2022

Construction of water conservancy projects has changed the hydrological situation of rivers and has an essential impact on river ecosystems. The influence modes of different factors on runoff alterations are discussed to improve the development and utilization of water resources and promote ecological benefits. The ecological hydrological indicator change range method (IHA–RVA) and the hydrological alteration degree method were integrated to evaluate the hydrological situation of the Min River in China. Based on six Budyko hypothesis formulas, the rates of contribution of climate change and human activities to runoff change are quantitatively analyzed. The results show that (1) the runoff of the Min River basin showed a significant decreasing trend from 1960 to 2019 and a sudden alteration around 1993; (2) the overall alteration in runoff conditions was 45% moderate and the overall alteration in precipitation was 37% moderate; (3) precipitation and potential evapotranspiration also showed a decreasing trend within the same period but the overall trend was not significant; (4) the contribution of climate variability to runoff alterations is 30.2% and the contribution of human activities to runoff alterations is 69.8%; human activities are the dominant factor affecting the alteration of the runoff situation in the Min River basin.
An Assessment of the Impacts of Snowmelt Rate and Continuity Shifts on Streamflow Dynamics in Three Alpine Watersheds in the Western U.S.
Authors: Chen Xiaohua , Tang Guoping , Chen Tao , Niu Xiangyu
Published: March 2022

In semiarid to arid regions of the western U.S., river flow availability and variability are highly subject to shifts in snow accumulation and ablation in alpine watersheds. This study aims to examine how shifts in snowmelt rate (SMR) and snow continuity, an indicator of the consistent existence of snow on the ground, affect snow-driven streamflow dynamics in three alpine watersheds in the U.S. Great Basin. To achieve this end, the coupled hydro-ecological simulation system (CHESS) is used to simulate river flow dynamics, and multiple snow metrics are calculated to quantify the variation of SMR and snow continuity, the latter of which is measured by snow persistence (SP), snow residence time (SRT), and snow season length (SSL). Then, a new approach is proposed to partition streamflow into snow-driven and rain-driven streamflow. The statistical analyses indicate that the three alpine watersheds experienced a downward trend in SP, SRT, SSL, and SMR during the study period of 1990–2016 due to regional warming. As a result, the decrease in SMR and the decline in snow continuity shifted the occurrence day of 25% and 50% of the snow-driven cumulative discharge, as well as peak discharge, toward an earlier occurrence. Moreover, the magnitudes of snow-driven annual streamflow, summer baseflow, and peak discharge also decreased due to the declined snow continuity and the reduced SMR. Overall, by using multiple snow and flow metrics, and by partitioning streamflow into snow-driven and rain-driven flow via the newly proposed approach, we found that SMR and snow continuity determine the streamflow hydrographs and magnitudes in the three alpine watersheds. Given that warming can significantly affect snow dynamics in alpine watersheds in semiarid to arid regions, this has important implications for water resource management in the snow-dominated region when facing future climate warming.
Assessment of an Alternative Climate Product for Hydrological Modeling: A Case Study of the Danjiang River Basin, China
Authors: Guo Yiwei , Ding Wenfeng , Xu Wentao , Zhu Xiudi , Wang Xiekang , Tang Wenjian
Published: March 2022

Precipitation has been recognized as the most critical meteorological parameter in hydrological studies. Recent developments in space technology provide cost-effective alternative ground-based observations to simulate the hydrological process. Here, this paper aims to evaluate the performance of satellite-based datasets in the hydrological modeling of a sensitive area in terms of water quality and safety watershed. Three precipitation products, i.e., rain gauge observations (RO), the China Meteorological Assimilation Driving Datasets for the SWAT model (CMADS), and Tropical Rainfall Measuring Mission Multi-satellite (TRMM) products, were used to develop the Soil and Water Assessment Tool (SWAT) model to simulate the streamflow in the Danjiang River Basin (DRB). The results show that: (1) these three precipitation products have a similar performance with regard to monthly time scale compared with the daily scale; (2) CMADS and TRMM performed better than RO in the runoff simulations. CMADS is a more accurate dataset when combined with satellite-based and ground-based data; (3) the results indicate that the CMADS dataset provides reliable results on both monthly and daily scales, and CMADS is a possible alternative climate product for developing a SWAT model for the DRB. This study is expected to serve as a reference for choosing the precipitation products for watersheds similar to DRB where the rain gauge data are limited.
Study of Jingjiang Beach Morphodynamics in the Tidal Reach of the Yangtze River
Authors: Wen Yuncheng , Xia Yunfeng , Du Dejun , Xu Hua , Zhang Fanyi , Cheng Zelin
Published: March 2022

Large marginal sandbanks in tidal rivers experience periodic splitting processes. In this paper, the morphodynamic evolution of Jingjiang Beach, a sandbank on the Yangtze tidal river, has been investigated based on measured data. The results show that the duration of the splitting process in the middle and lower sections of Jingjiang Beach is 4–6 years. The periodical evolution occurred both in flood season and dry season, with a slight difference in the initial stage of splitting. This paper focuses on the evolution characteristics related to strong human activities since 2003. Ever since the second stage of the 12.5 m Deepwater Channel Project (DCP), the volumes above the 10 m and 12.5 m isobaths of Jingjiang Beach have been generally decreasing. The elevation data in recent years have demonstrated that the upper section, and nearshore side of the middle section, of Jingjiang Beach have tended to be stable. Moreover, the migration distance for a splitting sand body at the tail of Jingjiang Beach appears to have shortened. With the operation of the Three Gorges Reservoir, the number of days with discharge less than 15,000 m3/s has shown a decreasing trend; thus, the development scale of Jingjiang Beach could decline in the future.
LOS DESAFÍOS DE LOS MÉTODOS DE SOLUCIÓN DE CONFLICTOS EN EL DERECHO A LA VIVIENDA
Authors: Rodríguez-de-la-Cerda Saúl Horacio
Published: March 2022

Hoy en día el derecho a la vivienda digna y decorosa se presenta como un derecho constitucional sumamente importante para el ciudadano, dado que este necesita de un habitat donde vivir, es decir, un espacio donde se desarrolle su vida, y viva en un entorno seguro y agradable. De modo que, para que se considere de una vivienda de calidad y consolidada, se necesita de lo que se conoce como calidad comunitaria, la cual se define como un indicador para medir la calidad del entorno donde se encuentran la vivienda, sin embargo, esta se ve afectada por los conflictos comunitarios que se presentan a lo largo del habitat, lo cual es un desafío para los mecanismos alternos de solución de controversias, como es la mediación comunitaria, la cual tiene como misión asegurar la calidad comunitaria de las personas que viven en un determinado barrio o ciudad.
Tipos de mantenimiento en las unidades de medición de producción de pozos petroleros
Authors: Medina Roger
Published: March 2022

El propósito de la investigación fue identificar los tipos de mantenimiento aplicados     a las unidades de medición de producción de pozos petroleros. La investigación fue descriptiva, con un diseño de campo, no experimental-transeccional. La población estuvo conformada por cinco superintendentes y diez supervisores, todos del área de mantenimiento, que laboran en las distintas Unidades de Producción que conforman el Distrito Lago Sur de la industria petrolera. Para la recolección de los datos se empleó la técnica de la encuesta, mediante la aplicación de un instrumento tipo cuestionario, conformado por 7 ítems con escala  de  frecuencia.  La  validez  se  realizó  a  través  del juicio de cinco expertos, y para calcular su confiabilidad se empleó el método      del Coeficiente Alfa de Cronbach, cuyo valor obtenido fue de 0,84. El análisis de los datos se realizó mediante la estadística descriptiva, a través del estudio de la media aritmética. Se determinó la aplicación del mantenimiento correctivo y una debilidad de la estructuración y aplicación de planes de los mantenimientos preventivo y predictivo.
Aplicación del Capital Asset Pricing Model para conocer el Beta dentro del mercado ecuatoriano
Authors: Terán Guerrero Fernando Neptalí , García Paredes Nery Elisabeth , Vizcaino Villavicencio Viviana de Lourdes , Carranza Guerrero Mirian Noemi
Published: March 2022

This research develops the Capital Asset Pricing Model (CAPM), which is one of the most used and examined models in finance. For the application of this model, a sample of two shares considered in the ECUINDEX index within the Ecuadorian stock market for the period 2016-2020 was obtained, to find the Beta for an investor in Ecuador. In this model, it is calculated taking into account variables such as the expected profitability, risk of the actions, and that the portfolio finds the appropriate Beta to make the investments, thus providing a useful tool when investing in the Ecuadorian financial market. The investigation is of a correlational type and a portfolio will be formed that will be made up of the shares of Cervecería Nacional, Corporación Favorita, which were able to obtain the information on the price of the shares and achieving results where the Beta minimizes the risk in the best way. is the Favorite Corporation with a ? = 1.9701, with a Ra = 4.92% and Cervecería Nacional with a ? = 0.0517, with a Rb = 1.52% within the Ecuadorian stock market. And the value of the portfolio was obtained at ? = 1.0111, with   Rp = 3.22%, so we are balancing risk and return to make an investment in these securities. The market risk premium is equal to 0.0177.
UPAYA ORANG TUA DALAM MENUMBUHKAN PERILAKU KEAGAMAAN ISLAM PADA REMAJA THE PARENTS� EFFORT TO FOSTER ISLAMIC RELIGIOUS BEHAVIOR IN TEENAGERS
Authors: Sodik Abdul
Published: March 2022

ABSTRAK Penyebab banyaknya orang memiliki akhlak kurang baik adalah kurangnya pengamalan perilaku keagamaan Islam. Ini merupakan implikasi dari rendahnya kepedulian terhadap ilmu-ilmu keagamaan Islam. Terutama pada remaja, yang saat ini lebih banyak disibukan oleh game online, dan berbagai pergejelokan jiwa mereka yang ingin coba semua hal. Penelitian ini bertujuan guna mengetahui upaya orang tua dalam menumbuhkan perilaku keagamaa Islam pada anaknya, hambatan-pendukung upaya orang tua, serta meneliti lingkungan pergaulan dari remaja dan sikap karakternya. Penelitian ini adalah penelitian kualitatif dengan pendekatan studi kasus, instrumennya adalah wawancara dan pengamatan, dan analisis data menggunakan model interaktif. Upaya orang tua dengan mengunakan metode nasihat saja adalah kurang efektif. Perubahan sikap remaja cenderung dipengaruhi oleh pergaulan mereka. Aktivitas pengamalan ibadah mereka memang sangat rendah, tapi dalam sisi akhlak lebih baik. Setidaknya sebagian dari mereka cukup tidak membuat tindakan melanggar batasan-batasan, serta peran remaja dalam aktivitas sosial kegamaan membangun stigma positif bagi masyarakat dan orang tua. Kelompok sosial yang kurang baik dan penggunaan handphone yang berlebih menjadi hambatan bagi upaya orang tua. Sebaliknya, kelompok sosial yang positif dan kegiatan majelis taklim sangat membantu upaya orang tua.Kata kunci : Perilaku keagamaan Islam,, orang tua, remaja, pergaulanABSTRACTThe reason for many people have a bad morals is the lack of their practice in islamic religious behavior. This is the implication of a lack of concern for islamic religious science. Especially for teenagers, who are currently more preoccupied with online games, and the various twists and turns of the soul of those who want to try everything. The study aims to learn about the efforts of parents to foster islamic religious behavior of their children, support-barriers of parental effort, as well as to research the environment of teenagers and their attitudes. This study is qualitative research with the case study approach, the instrumens are interview and observations, the data analysis use interactive models. Parents' efforts only use advice methods is not effective. The teenagers changes attitude tends to be influenced by their association. Their religious practies are very low, but on the moral side are better. At least some of them simply do not make encroachment, and their role in religious activities enough to builds on the positive stigma of society and parents. Negative associations and excessive use of mobile phones are parents barriers. Instead, positive association and activities in the taklim assembly are support the parental efforts.Keywords: Islamic religious behavior, parents, teenagers, association.
WhatsApp as a tool for Building a Learning Community
Authors: Cronje Johannes , Van Zyl Izak
Published: March 2022

WhatsApp groups are considered useful for creating and supporting virtual communities. This mixed method case study explores the patterns that emerged when we used WhatsApp to create a community of learning during the multimodal presentation of a postgraduate course in research proposal writing. Three questions drive the study: (1) What kinds of messages were sent? (2) Who participated and how? (3) How did the learners experience the use of WhatsApp in support of the community of learning? Data were collected during the presentation of a five-evening proposal writing workshop that was conducted using Zoom, WhatsApp, and YouTube as communication platforms. To answer the first question, all WhatsApp messages were analysed through both manual (individual) and automated (meta) content analysis. The third question was answered by analysing students’ responses to the end-of session online questionnaire that was administered via Google Forms. Results indicate that many messages were administrative in nature, while the most notable academic messages concerned a discussion of empirical research, research paradigms, and research design. The presenter and co-presenter together accounted for almost half of the messages sent, and the other messages were evenly distributed between members of the class, with five notably vocal students. Student responses indicated that they liked the high level of interactivity and the content, but that they disliked the time it took to form groups. The paper contributes to the literature by showing how this use of multiple WhatsApp groups was effective in creating a sense of community by facilitating access, relationships, vision, and function (West and Williams, 2017). More research is needed in determining the extent to which students might support one another with conversations outside of the main WhatsApp group.
Perancangan Jobsheet Mikroprosesor Zilog 80 Menggunakan Mikroprofesor MPF-1
Authors: Permata Endi , Irwanto
Published: March 2022

An understanding of the microprocessor is needed for the development of a microcomputer. The Z80 microprocessor was chosen as a learning medium because the programming architecture is still basic. This study uses R&D (Research and Development) and the ADDIE (Analyze, Design, Development, Implement, Evaluate) development model. The final product of this research is learning media in the form of Zilog 80 Microprocessor Jobsheet. students in microprocessor courses and the implementation of microprocessor practicums so that they can run effectively. The research results obtained for the Zilog 80 Microprocessor Jobsheet based on the assessment of media experts get a total percentage of 81.2% and are included in the very eligible category, then the results of the assessment based on material experts get a total percentage of 87.5% and fall into the category very worthy. In addition, the results of questionnaires from users of the Zilog 80 Microprocessor Jobsheet also received a total percentage of 85% and were included in the very eligible category. Based on the results of the assessment obtained, it can be concluded that the Zilog 80 Microprocessor Jobsheet can be said to be eligible as a learning medium
Digitizing parking area availability information using Canny algorithm based on Android application
Authors: Ramadona Suci , Indani Wira , Susantok Mochamad , Rahayu Maya
Published: March 2022

The Covid-19 pandemic is a factor in accelerating digital transformation in all aspects of community needs, especially in the parking area. Unmonitored and non-digitalized parking lots can cause delays that increase the transmission of Covid-19. In this study, a parking digitization system is created to make it easier for the public to know how dense is the area of ??the location to be visited, as well as a vacant area that can be occupied to park vehicles by users of the parking lot through a smartphone application. This study uses the Canny algorithm through an optical flow process captured by the IP Camera, next the data is processed and presented in the Android application. From the system that has been made, the system detects the presence of vehicles with an accuracy of above 95%.
1B ve 2B Taşkın Modellemesinin Karşılaştırılması: Fol Deresi Örneği
Authors: KAYA Çağla Melisa
Published: March 2022

İnsan uygarlığının başlangıcından beri, taşkınlar insanlığın iç içe olduğu afetlerden biridir. Özellikle yerleşim alanları olarak seçilen su kenarları bunu kaçınılmaz hale getirmiştir. İnsanlık tarihinde büyüklü küçüklü çok sayıda taşkın olayı tarihi kayıtlarda yer almaktadır. Bununla birlikte değişen iklim koşulları, arazi örtüsündeki değişikliler, plansız kentleşme gibi nedenlerle taşkın afetlerinin şiddeti artmıştır. Literatürde birçok bilim insanının ifade ettiği gibi taşkınlardan kaçmak mümkün değildir ancak uyumlu planlama yaklaşımlarıyla birlikte yaşamaya uyumlu hale gelmek mümkündür. Bu nedenle, araştırmacılar taşkın afetini farklı yönleriyle ele almaktadır. Ancak planlama yaklaşımları açısından literatürde taşkın modelleme çalışmalarında bir boyutlu (1B) veya iki boyutlu (2B) modeller kullanılabilmektedir. Ancak birinin diğerinden üstünlüğü hususunda standartlaşmış bir kabul yoktur. Bu çalışmada, 1B ve 2B taşkın modelleme yöntemlerinin kıyası Fol Deresi, Vakfıkebir, Trabzon örneği üzerinden araştırmıştır. Çalışmada yüksek çözünürlüklü arazi modeli, uydu görüntüleri, Hec-RAS yazılımı, CBS platformu, tarihi taşkın kayıtları, topoğrafik haritalar, akım ve meteorolojik veriler kullanılmıştır.
Estudio experimental y computacional del perfil térmico en el interior del cilindro de un equipo de Altas Presiones Hidrostáticas
Authors:   , Ormando Paula
Published: March 2022

En el presente trabajo de Tesis Doctoral se estudió a nivel experimental y computacional el perfil térmico del cilindro de un equipo de Alta Presión Hidrostática (APH) de escala laboratorio. Se evaluaron las temperaturas del fluido de compresión, agua-propilenglicol (70:30 v/v), en diferentes posiciones de la canasta con y sin carga de producto a 200, 400 y 600 MPa durante tres usos consecutivos del equipo. Asimismo, se analizó el contenido de sulfhidrilos libres de una enzima fúngica en muestras procesadas a 600 MPa como una medida indirecta del efecto térmico. El estudio computacional contempló la modificación de la aplicación compressibleInterFoam desarrollada en OpenFOAM® para simular un flujo multifásico compresible y se adaptó para modelar las paredes del cilindro del equipo como un fluido de muy alta viscosidad, y de esta manera simular el problema acoplado de transferencia térmica fluido-sólido. Se simuló el proceso a 600 MPa, con y sin carga de producto para el primer uso del equipo y luego su régimen térmico. La labor realizada en esta etapa permitió comprender e interpretar el efecto observado a nivel experimental, a diferentes posiciones en el interior del cilindro, y carga durante su procesamiento por APH.
Risk Management Committee, Institutional Ownership, and Real Earnings Management
Authors: Abubakar Ahmad Haruna , Mansor Noorhayati , Fadhil Noor Fadzlina Mohd
Published: March 2022

Objective –The study investigates whether firms with an independent risk management committee and the presence of
institutional investors will deter management from engaging in real earnings management.
Methodology – The data are derived from 360 firm-year observations collected over five years (2015-2019). To analyze
the data, the Panel Corrected Standard Error is used.
Findings– According to the results, the risk management committee and institutional investors reduce management's
desire to manipulate reported earnings.
Novelty – The presence of a risk management committee, according to this paper, reduces managers' discretion to dwell
on real earnings manipulations. The study educates regulators on the importance of firms having a separate and active
risk management committee to improve internal control and assist the board in monitoring management activities.
Type of Paper: Empirical
JEL Classification: M40; M41; M49.
Keywords: Earnings Management, Risk Management Committee, Institutional, Nigeria
A REVIEW OF DIGITAL PAYMENT ADOPTION IN ASIA
Authors: Susanto Eko , Solikin Ikin , Purnomo Budi Supriatono
Published: March 2022

Digital payments have changed people's financial behavior, particularly in Asian countries. The expansion of the internet network and the intensification of gadget functions have grown digital payment systems in mobile payments, internet banking, QR Codes, and electronic payments. Using a Systematic Literature Review, the study examined various Scopus articles from Asian countries to obtain an overview of the factors that influence the adoption of digital payments. We analyzed 597 digital, electronic, and mobile payment articles. TAM and UTAUT were found to be the most widely found theories to significantly affect user intent and even the continuity of digital payment use. While in the method, the structural equation model becomes the most widely used analytical method in various scientific publications related to this topic. This study has found internal and external factors from users in the adoption process of digital payments, including trust, perceived risk, satisfaction, security social influences, and facilitation conditions. Interestingly, some of these factors were insignificant in some studies due to differences in digital payment products that were the object of the study, respondents, and differences in research methods and approaches.