bluuebunny/crossref_metadata_2025 huggingface dataset:
Early Risk Warning of Highway Soft Rock Slope Group Using Fuzzy-Based Machine Learning
Authors: Zhou Cuiying , Ouyang Jinwu , Liu Zhen , Zhang Lihai
Published: March 2022

Maintaining the stability of highway soft rock slopes is of critical importance for ensuring the safety of road networks. Although much research has been carried out to assess the stability of individual soft rock slope, the goal of efficient and effective risk management focusing on multiple highway soft rock slopes has not been fully achieved due to the many complex factors involved and the interactions among these factors. In the present study, a machine learning algorithm based on a fuzzy neural network (FNN) and a comprehensive evaluation method based on the FNN is developed, in order to identify and issue early warnings regarding the risks induced by soft rock slopes along highways, in an efficient and effective way. Using a large amount of collected soft rock slope information as training and validation data, an FNN-based risk identification model is first developed to identify the risk level of individual soft rock slope based on the meteorological conditions, topographical and geomorphological factors, geotechnical properties, and the measured horizontal displacement. An FNN-based comprehensive evaluation method is then developed, in order to quantify the risk level of a soft rock slope group according to the slope, road and external factors. The results show that the risk level identification accuracy obtained based on validation of the FNN model was higher than 90%, and the model showed a good training effect. On this basis, we further made early warnings of the risks of soft rock slope groups. The proposed early-warning model can quickly and accurately evaluate the risk posed by multiple soft rock slopes to a highway, thereby ensuring the safety of the highway.
Energy Saving in Single-Machine Scheduling Management: An Improved Multi-Objective Model Based on Discrete Artificial Bee Colony Algorithm
Authors: Jia Jing , Lu Chao , Yin Lvjiang
Published: March 2022

Green manufacturing, which takes environmental effect and production benefit into consideration, has attracted increasing concern with the target of carbon peaking and carbon neutrality proposed. As a critical process in the manufacturing system, shop scheduling is also an important method for enterprises to achieve green manufacturing. Therefore, it is necessary to consider both production benefits and environmental objectives in shop scheduling, which are symmetrical and equally important. In addition, noise pollution has become an important environmental issue that cannot be ignored in the manufacturing processes, but which has been paid less attention in previous studies. Thus, the MODABC algorithm, with the optimization objectives of simultaneously minimizing lead-time/tardiness cost and job-shop noise pollution emission is proposed in this paper. We designed a discrete permutation-based two-layer encoding mechanism to generate the initial population. Then, three crossover methods were used to perform nectar update operations in the employed bee search phase, and three neighbourhood structures were used to improve the onlooker bee search operations. Finally, the MODABC algorithm was compared with other classical MOEAs. The results demonstrate that MODABC can provide non-dominated solution set with good convergence and distribution, and show significant superiority in solving green single-machine multi-objective scheduling problems.
Joint Offloading Decision and Resource Allocation in Mobile Edge Computing-Enabled Satellite-Terrestrial Network
Authors: Tong Minglei , Wang Xiaoxiang , Li Song , Peng Liang
Published: March 2022

With the development of satellite-terrestrial network (STN), mobile edge computing (MEC) servers are deployed at low orbit earth (LEO) satellites to provide computing services for user devices (UEs) in areas without terrestrial network coverage. There is symmetry between satellite networks and terrestrial networks, but there is asymmetry between their resources. Computing resources of satellites’ MEC servers may not be enough. The satellite-terrestrial cooperation is promising, where a satellite migrates tasks to a base station (BS) in an adjacent area, thus utilizing computing resources of the BS’s MEC server. Although there are some studies on computation offloading in STN, few studies consider a satellite as both a relay and a computing unit to assist UEs in computing tasks. This paper proposes a joint offloading decision and resource allocation scheme in MEC-enabled STN, which minimizes the completion delay of all UEs’ indivisible tasks. Firstly, the optimization problem is formulated and decomposed. Then, the proposed scheme based on potential game and the Lagrange multiplier method makes UEs’ task offloading decisions and allocates the satellite’s and the BS’s computing resources, thus obtaining the optimal solution through continuous iterations. Finally, the simulation results validate that the proposed scheme can obtain better gain than other baseline schemes.
Symmetric and Non-Oscillatory Characteristics of the Neutral Differential Equations Solutions Related to p-Laplacian Operators
Authors: Almarri Barakah , Ali Ali Hasan , Al-Ghafri Khalil S. , Almutairi Alanoud , Bazighifan Omar , Awrejcewicz Jan
Published: March 2022

The main purpose of this research was to use the comparison approach with a first-order equation to derive criteria for non-oscillatory solutions of fourth-order nonlinear neutral differential equations with p Laplacian operators. We obtained new results for the behavior of solutions to these equations, and we showed their symmetric and non-oscillatory characteristics. These results complement some previously published articles. To find out the effectiveness of these results and validate the proposed work, two examples were discussed at the end of the paper.
Indoor Carbon Dioxide, Fine Particulate Matter and Total Volatile Organic Compounds in Private Healthcare and Elderly Care Facilities
Authors: Baudet Alexandre , Baurès Estelle , Blanchard Olivier , Le Cann Pierre , Gangneux Jean-Pierre , Florentin Arnaud
Published: March 2022

Poor indoor air quality can have adverse effects on human health, especially in susceptible populations. The aim of this study was to measure the concentrations of dioxide carbon (CO2), fine particulate matter (PM2.5) and total volatile organic compounds (TVOCs) in situ in private healthcare and elderly care facilities. These pollutants were continuously measured in two rooms of six private healthcare facilities (general practitioner’s offices, dental offices and pharmacies) and four elderly care facilities (nursing homes) in two French urban areas during two seasons: summer and winter. The mean CO2 concentrations ranged from 764 ± 443 ppm in dental offices to 624 ± 198 ppm in elderly care facilities. The mean PM2.5 concentrations ranged from 13.4 ± 14.4 µg/m3 in dental offices to 5.7 ± 4.8 µg/m3 in general practitioner offices. The mean TVOC concentrations ranged from 700 ± 641 ppb in dental offices to 143 ± 239 ppb in general practitioner offices. Dental offices presented higher levels of indoor air pollutants, associated with the dental activities. Increasing the ventilation of these facilities by opening a window is probably an appropriate method for reducing pollutant concentrations and maintaining good indoor air quality.
Vulnerability to Nitrate Occurrence in the Spring Waters of the Sila Massif (Calabria, Southern Italy)
Authors: Infusino Ernesto , Guagliardi Ilaria , Gaglioti Simona , Caloiero Tommaso
Published: March 2022

Knowledge of spring waters’ chemical composition is paramount for both their use and their conservation. Vast surveys at the basin scale are required to define the nature and the location of the springs and to identify the hydrochemical facies of their aquifers. The present study aims to evaluate the hydrochemical facies and the vulnerability to nitrates of 59 springs falling in the Sila Massif in Calabria (southern Italy) and to identify their vulnerability through the analysis of physicochemical parameters and the use of the Langelier–Ludwig diagram. A spatial analysis was performed by the spline method. The results identified a mean value of 4.39 mg NO3−/L and a maximum value of 24 mg NO3−/L for nitrate pollution in the study area. Statistical analysis results showed that the increase in electrical conductivity follows the increase in alkalinity values, a correlation especially evident in the bicarbonate Ca-Mg waters and linked to the possibility of higher nitrate concentrations in springs. These analyses also showed that nitrate vulnerability is dependent on the geological setting of springs. Indeed, the Sila igneous–metamorphic batholith, often strongly affected by weathering processes, contributes to not buffering the nitrate impacts on aquifers. Conversely, anthropogenic activities, particularly fertilization practices, are key factors in groundwater vulnerability.
Chronic Perigestational Exposure to Chlorpyrifos Induces Perturbations in Gut Bacteria and Glucose and Lipid Markers in Female Rats and Their Offspring
Authors: Djekkoun Narimane , Depeint Flore , Guibourdenche Marion , El Khayat El Sabbouri Hiba , Corona Aurélie , Rhazi Larbi , Gay-Queheillard Jerome , Rouabah Leila , Hamdad Farida , Bach Véronique , Benkhalifa Moncef , Khorsi-Cauet Hafida
Published: March 2022

An increasing burden of evidence is pointing toward pesticides as risk factors for chronic disorders such as obesity and type 2 diabetes, leading to metabolic syndrome. Our objective was to assess the impact of chlorpyrifos (CPF) on metabolic and bacteriologic markers. Female rats were exposed before and during gestation and during lactation to CPF (1 mg/kg/day). Outcomes such as weight, glucose and lipid profiles, as well as disturbances in selected gut bacterial levels, were measured in both the dams (at the end of the lactation period) and in their female offspring at early adulthood (60 days of age). The results show that the weight of CPF dams were lower compared to the other groups, accompanied by an imbalance in blood glucose and lipid markers, and selected gut bacteria. Intra-uterine growth retardation, as well as metabolic disturbances and perturbation of selected gut bacteria, were also observed in their offspring, indicating both a direct effect on the dams and an indirect effect of CPF on the female offspring. Co-treatment with inulin (a prebiotic) prevented some of the outcomes of the pesticide. Further investigations could help better understand if those perturbations mimic or potentiate nutritional risk factors for metabolic syndrome through high fat diet.
Metals Bioaccumulation in 15 Commonly Consumed Fishes from the Lower Meghna River and Adjacent Areas of Bangladesh and Associated Human Health Hazards
Authors: Hossain Mohammad Belal , Tanjin Fatema , Rahman M. Safiur , Yu Jimmy , Akhter Shirin , Noman Md Abu , Sun Jun
Published: March 2022

The lower Meghna River, the easternmost part of the Ganges Delta, faces severe anthropogenic perturbations as it receives a huge discharge and industrial effluents. To measure the metal concentrations and human health hazards, edible tissues of 15 commercially important fish species were collected from the local fish markets and the lower Meghna River, Bangladesh. Trace and heavy metals such as Pb, Cr, Cu, Zn, Mn, Fe, Hg, Ni, Ca, Co, Se, Rb, Sr, and As were detected using the Energy Dispersive X-ray Fluorescence (EDXRF) method. The hierarchy of mean metal concentrations obtained was: Fe (162.198 mg/kg) > Zn (113.326 mg/kg) > Ca (87.828 mg/kg) > Sr (75.139 mg/kg) > Cu (36.438 mg/kg) > Se (9.087 mg/kg) > Cr (7.336 mg/kg) > Mn (6.637 mg/kg) > Co (3.474 mg/kg) > Rb (1.912 mg/kg) > Hg (1.657 mg/kg) > Ni (1.467 mg/kg) > Pb (0.521 mg/kg) > As (BDL). Based on the metal concentration obtained, the carnivorous species contained more metals than omnivores and herbivores. Similarly, the euryhaline and benthic feeder fishes had more metals than the stenohalines and demersal fishes. The metal pollution index (MPI) suggested that the highly consumed fish species Tilapia (Oreochromis mossambicus) and Rui (Labeo rohita) accumulated higher metals than other fishes. Both the Targeted Hazard Quotient (THQ) and Hazard Index (HI) values for adult and child consumers were <1, indicating that consumers would not experience the non-carcinogenic health effects. Although children were more susceptible than adults, carcinogenic risk (CR) exposure of Cr for all the consumers was found in the acceptable range (10−6 to 10−4), but the CR exposure of Pb was negligible for all the consumers. The correlation, principal component analysis (PCA), and cluster analysis were conducted to identify the sources of metals identified from the fish tissue. The results indicated that the probable sources of the pollutants were anthropogenic, arising from agricultural activities, electroplating materials, and lubricants used near the study area. However, the present study showed a different metal concentration in the samples at different levels but within the threshold levels non-carcinogenic and carcinogenic health risks; hence, the fishes of the area, in general, are safe for human consumption.
The Contribution of Large Recurrent Sunspot Groups to Solar Activity: Empirical Evidence
Authors: Shapoval Alexander
Published: March 2022

We identify large sunspot nestlets (SN) mostly containing recurrent sunspot groups and investigate the indices of solar activity defined as the 11- or 22-year moving average of the daily areas of the SN. These nestlets, 667 in total, are constructed from the daily 1874–2020 RGO/SOON catalogue, which contains 41,394 groups according to their IDs, with a machine-learning technique. Within solar cycles 15–19, the index contributed disproportionately strongly to the overall solar activity: the index is normalized to a quasi-constant shape by a power function of the activity, where the exponent is approximately 1.35. Large SN contribute to solar activity even more in cycle 22, underlying the second largest peak of solar activity within the last Gleissberg cycle in ∼1985. Introducing another composite, moderate SN normalized by the overall activity, we observe its quasi-constant shape in cycles 15–19 and a general anti-correlation with the first normalized composite. The constructed sunspot nestlets constitute a modified catalogue of solar activity. We define the average lifetime per day in 22-year windows for the modified catalogue, in line with Henwood et al. (SoPhys 262, 299, 2010), and reproduce the dynamics of this quantity they revealed for 1900–1965. The average lifetime derived from the moderate SN is found to form a wave with minima at the beginning of the 20th and 21st centuries, resembling the Gleissberg cycle with long minima. The average lifetime characterizing large SN exhibited a deeper minimum at the beginning of the 20th century than 100 years later.
Development and Application of a Reverse-Transcription Recombinase-Aided Amplification Assay for Porcine Epidemic Diarrhea Virus
Authors: Wu Xiuhong , Liu Yuanjia , Gao Liguo , Yan Zhuanqiang , Zhao Qiqi , Chen Feng , Xie Qingmei , Zhang Xinheng
Published: March 2022

Porcine epidemic diarrhea virus (PEDV) is a coronavirus currently widespread worldwide in the swine industry. Since PEDV was discovered in China in 1984, it has caused huge economic losses in the swine industry. PEDV can infect pigs of all ages, but piglets have the highest infection with a death rate as high as 100%, and the clinical symptoms are watery diarrhea, vomiting, and dehydration. At present, there is not any report on PEDV detection by RT-RAA. In this study, we developed an isothermal amplification technology by using reverse-transcription recombinase-aided amplification assay (RT-RAA) combined with portable instruments to achieve a molecular diagnosis of PEDV in clinical samples from China. By designing a pair of RT-RAA primers and probes based on the PEDV N gene, this method breaks the limitations of existing detection methods. The assay time was within 30 min at 41 °C and can detect as few as 10 copies of PEDV DNA molecules per reaction. Sixty-two clinical tissue samples were detected by RT-qPCR and RT-RAA. The positive and negative rates for the two methods were 24.19% and 75.81%, respectively. Specificity assay showed that the RT-RAA had specifically detected PEDV and was not reactive for porcine parvovirus (PPV), transmissible gastroenteritis virus (TGEV), porcine circovirus type 2 (PCV2), porcine pseudorabies virus (PRV), porcine reproductive and respiratory syndrome virus (PRRSV), classical swine fever virus (CSFV), swine flu virus (SIV), or porcine Japanese encephalitis virus (JEV). The results suggested that RT-RAA had a strong specificity and high detection sensitivity when combined with a portable instrument to complete the detection under a constant temperature of 30 min, which are more suitable for preventing and controlling PEDV onsite in China.
Utilization of Viral Vector Vaccines in Preparing for Future Pandemics
Authors: Hofmeyer Kimberly A. , Bianchi Katherine M. , Wolfe Daniel N.
Published: March 2022

As the global response to COVID-19 continues, government stakeholders and private partners must keep an eye on the future for the next emerging viral threat with pandemic potential. Many of the virus families considered to be among these threats currently cause sporadic outbreaks of unpredictable size and timing. This represents a major challenge in terms of both obtaining sufficient funding to develop vaccines, and the ability to evaluate clinical efficacy in the field. However, this also presents an opportunity in which vaccines, along with robust diagnostics and contact tracing, can be utilized to respond to outbreaks as they occur, and limit the potential for further spread of the disease in question. While mRNA-based vaccines have proven, during the COVID-19 response, to be an effective and safe solution in terms of providing a rapid response to vaccine development, virus vector-based vaccines represent a class of vaccines that can offer key advantages in certain performance characteristics with regard to viruses of pandemic potential. Here, we will discuss some of the key pros and cons of viral vector vaccines in the context of preparing for future pandemics.
Attitudes and Determinants of Mandatory Vaccination against COVID-19 among the General Population of Cyprus: A Nationwide Cross-Sectional Study
Authors: Giannakou Konstantinos , Kyprianidou Maria , Heraclides Alexandros
Published: March 2022

Vaccinations for the prevention of coronavirus disease (COVID-19) are important to control the ongoing pandemic. A much-discussed strategy to increase vaccination coverage is mandatory vaccination; however, its legitimacy and effectiveness as a measure are doubtful. This study aims to investigate the attitudes of the general population of Cyprus towards COVID-19 mandatory vaccination and to identify the factors influencing individuals’ attitudes towards such policy. An online cross-sectional study was conducted, using a self-administered, anonymous questionnaire to collect information on sociodemographic and health-related characteristics, trust, and satisfaction about the healthcare system and utilization of preventive healthcare services, COVID-19 vaccination information, general vaccination knowledge, and attitudes towards mandatory vaccination. A total of 2140 participants completed the survey, with 27.8% being in favor of mandatory vaccination. We found that as the age increases by one year, the odds of supporting mandatory vaccination increase by 1.04 units (OR 1.04, 95% CI: 1.02–1.05). In addition, those who reported increased trust in national healthcare authorities’ guidelines and recommendations (OR 3.74, 95% CI: 3.11–4.49) and those satisfied with the healthcare system (OR 1.38, 95% CI: 1.16–1.65) and follow doctor’s instructions (OR 1.29, 95% CI: 1.03–1.61), were significantly more likely to support mandatory vaccination while those who had underage children living in the household were significantly less likely to support mandatory vaccination (OR 0.69, 95% CI: 0.50–0.94). Public health authorities need to develop well-organized vaccination campaigns in which accurate evidence-based information would be disseminated with respect to individuals’ autonomy.
A Deliberative Rural Community Consultation to Assess Support for Flood Risk Management Policies to Strengthen Resilience in Malawi
Authors: Dewa Ozius , Makoka Donald , Ayo-Yusuf Olalekan
Published: March 2022

As disasters increase in frequency and magnitude with adverse effects on population health, governments will be forced to implement disaster risk management policies that may include forced relocation. Ineffective public consultation has been cited as one reason for failure of these policies. Using the deliberative polling method, this study assessed the capacity of rural communities to participate in flood risk management policy priority setting and the impact of providing accurate and balanced information on policies by comparing pre-and post -deliberation data. The study also assessed the level of trust on whether government and community would use the results of this study. Results indicated strong community support for policy options to reduce vulnerability in communities and strong resistance to relocation. As all the top five ranked policy options were concerned with population pressure, gender, and social service issues, which are all conceptually considered social determinants of a healthy community, this study concludes that public health considerations are central to flood risk policy development and implementation. The study revealed high levels of trust in government and the community relating to flood risk management, which policymakers in low-to-middle income countries can capitalise on for meaningful community consultation for effective disaster risk management.
Geospatial Assessment of Groundwater Quality with the Distinctive Portrayal of Heavy Metals in the United Arab Emirates
Authors: Salem Imen Ben , Nazzal Yousef , Howari Fares M. , Sharma Manish , Mogaraju Jagadish Kumar , Xavier Cijo M.
Published: March 2022

Groundwater is a valuable resource, and its quality is critical to human survival. Optimal farming and urbanization degraded groundwater reserves. This research investigates and reports the spatial variability of selected heavy metals developed in the Liwa area of the United Arab Emirates. Forty water samples were collected from existing wells and analyzed for different elements. Principal components analysis was applied to a subgroup of the data set in terms of their usefulness for determining the variability of groundwater quality variables. Geographic information systems were used to produce contour maps to analyze the distribution of heavy metals. Ordinary kriging was used with Circular, Spherical, Tetraspherical, Pentaspherical-Bessel, K-Bessel, Hole effect, and Stable models for better representation. The water quality index was constructed using heavy metal concentrations and other variables. This yielded a value of 900 beyond the limit stated by WHO and US EPA. Nugget analysis showed that Cd (0), K (7.38%), and SO4 (1.81%) variables exhibited strong spatial dependence. Al (27%), Ba (40.87%), Cr (63%), Cu (34%), EC (27%), HCO3 (56%), NO3(36%), Pb (64%), and TDS (53%) represented moderate spatial dependence. As (76%), Mn (79%), Ni (100%), pH (100%), Temp (93%), and Zn (100%) exhibited weak spatial dependence.
Treatment and Recovery of High-Value Elements from Produced Water
Authors: Miranda Michael Angelo , Ghosh Anirban , Mahmodi Ghader , Xie Songpei , Shaw Madelyn , Kim Seokjhin , Krzmarzick Mark J. , Lampert David J. , Aichele Clint P.
Published: March 2022

Oil and gas production wells generate large volumes of water mixed with hydrocarbons (dispersed and dissolved), salts (ions), and solids. This ‘produced water’ (PW) is a waste stream that must be disposed of appropriately. The presence of toxic hydrocarbons and ions in PW makes it unsuitable for surface discharge or disposal in groundwater resources. Thus, PW is often injected into deep geological formations as a disposal method. However, the supply of global water sources is diminishing, and the demand for water in industrial, domestic, and agricultural use in water-stressed regions makes PW a potentially attractive resource. PW also contains valuable elements like lithium and rare earth elements, which are increasing in global demand. This review article provides an overview of constituents present in PW, current technologies available to remove and recover valuable elements, and a case study highlighting the costs and economic benefits of recovering these valuable elements. PW contains a promising source of valuable elements. Developing technologies, such as ceramic membranes with selective sorption chemistry could make elemental recovery economically feasible and turn PW from a waste stream into a multi-faceted resource.
Dynamic Modeling of Crop–Soil Systems to Design Monitoring and Automatic Irrigation Processes: A Review with Worked Examples
Authors: Lopez-Jimenez Jorge , Vande Wouwer Alain , Quijano Nicanor
Published: March 2022

The smart use of water is a key factor in increasing food production. Over the years, irrigation has relied on historical data and traditional management policies. Control techniques have been exploited to build automatic irrigation systems based on climatic records and weather forecasts. However, climate change and new sources of information motivate better irrigation strategies that might take advantage of the new sources of information in the spectrum of systems and control methodologies in a more systematic way. In this connection, two open questions deserve interest: (i) How can one deal with the space–time variability of soil conditions? (ii) How can one provide robustness to an irrigation system under unexpected environmental change? In this review, the different elements of an automatic control system are described, including the mathematical modeling of the crop–soil systems, instrumentation and actuation, model identification and validation from experimental data, estimation of non-measured variables and sensor fusion, and predictive control based on crop–soil and weather models. An overview of the literature is given, and several specific examples are worked out for illustration purposes.
Driving Factors of Total Organic Carbon in Danjiangkou Reservoir Using Generalized Additive Model
Authors: Jiang Yeqing , He Kang , Li Yuying , Qin Mingqing , Cui Zhenzhen , Zhang Yun , Yao Yinlei , Chen Xiaonuo , Deng Minjie , Gray Andrew , Li Bailian
Published: March 2022

Dynamic changes in total organic carbon (TOC) concentration in lakes and reservoirs affect the functions of aquatic ecosystems and are a key component of water quality management, especially in drinking water sources. The Danjiangkou Reservoir is the water source area of the Middle Route Project of the South-to-North Water Diversion in China. Its water quality is of critical importance to the safety of water diversion. TOC concentration and other environmental factors at 19 sampling sites in the Danjiangkou Reservoir were investigated quarterly during 2020–2021 to explore the differences at the spatio-temporal scales. A generalized additive model (GAM) was used to analyze the environmental factors correlated with the observed spatio-temporal variations of TOC concentration. The results showed that the comprehensive trophic level index (TLI) of the Danjiangkou Reservoir was under the state of intermediate nutrition, and the water quality was overall good. In terms of temporal patterns, TOC concentration was higher in both spring and summer and lower in other seasons. Spatially, TOC concentrations were found in descending order from the site of outlet, Han reservoir, entrance of reservoir, and Dan reservoir. The single-factor GAM model showed that TOC correlated with different environmental factors across spatio-temporal scales. Water temperature (WT), permanganate index (CODMn), and ammonia nitrogen (NH4+-N) were significantly correlated with TOC in autumn, but only total nitrogen (TN) and transparency (SD) were significant in winter. Spatially, WT, chemical oxygen demand (COD), NH4+-N, TN, and conductivity (Cond) correlated with TOC in the Dan reservoir, but WT, COD, NH4+-N, total phosphorus (TP), and chlorophyll a (Chl.a) were significant in the Han reservoir. The multi-factor GAM model indicated that the environmental factors correlated with TOC concentration were mainly WT, TN, Cond, CODMn, and TP, among which WT and Cond showed a significant linear relationship with TOC concentration (edf = 1, p < 0.05), while TN, CODMn, and TP had a significant nonlinear relationship with TOC concentration (edf > 1, p < 0.05). Comprehensive trophic level index (TLI) and TOC concentration revealed a highly significant correlation (R2 = 0.414, p < 0.001). Therefore, the GAM model could well explain the environmental factors associated with the spatio-temporal dynamics of TOC concentration, providing a reference for the evaluation of water quality and research on the carbon cycle in similar inland reservoirs.
The Impact of Tree Planting on Infiltration Dependent on Tree Proximity and Maturity at a Clay Site in Warwickshire, England
Authors: Revell Nathaniel , Lashford Craig , Rubinato Matteo , Blackett Matthew
Published: March 2022

Urbanisation and the replacement of previously vegetated areas with impermeable surfaces reduces the lag times of overland flow and increases peak flows to receiving watercourses; the magnitude of this will increase as a result of climate change. Tree planting is gaining momentum as a potential method of natural flood management (NFM) due to its ability to break up soil and increase infiltration and water storage. In this study, a 2.2 km2 clay-textured area in Warwickshire, England, planted with trees every year from 2006 to 2012 was sampled to investigate how infiltration varies dependent on season and tree proximity and maturity. Infiltration data was collected from 10 and 200 cm away from selected sample trees from November 2019 to August 2021 using a Mini Disk infiltrometer (MDI). The results show that mean infiltration is higher at the 10 cm proximity compared with the 200 cm proximity by 75.87% in winter and 25.19% in summer. Further to this, mean 10 cm infiltration is 192% higher in summer compared with winter, and mean 200 cm infiltration is 310% higher in summer compared with winter. There is little evidence to suggest a relationship between infiltration and tree maturity at the study site.
Precision of Headwater Stream Permanence Estimates from a Monthly Water Balance Model in the Pacific Northwest, USA
Authors: Hafen Konrad C. , Blasch Kyle W. , Gessler Paul E. , Sando Roy , Rea Alan
Published: March 2022

Stream permanence classifications (i.e., perennial, intermittent, ephemeral) are a primary consideration to determine stream regulatory status in the United States (U.S.) and are an important indicator of environmental conditions and biodiversity. However, at present, no models or products adequately describe surface water presence for regulatory determinations. We modified the Thornthwaite monthly water balance model (MWBM) with a flow threshold parameter to estimate flow permanence and evaluated the model’s accuracy and precision for more than 1.3 million headwater stream reaches in the U.S. Pacific Northwest (PNW). Stream reaches were assigned to one of eight calibration groups by unsupervised classification based on sensitivity to MWBM parameters. Suitable MWBM parameter sets were identified by comparing modeled stream permanence estimates to surface water presence observations (SWPO). Parameter sets with accuracies > 65% were considered suitable. The MWBM estimated stream permanence with high precision at 40% of reaches, with poor precision at 20% of reaches, and no suitable parameter sets were identified for 40% of reaches. Results highlight the need for increased SWPO collection to improve calibration and assessment of stream permanence models. Additionally, implementation of the MWBM to estimate surface water presence indicates potential for process-based models to predict stream permanence with future development.
Evaluación remota desde la perspectiva de los estudiantes universitarios de Lima Metropolitana
Authors: Gonzales Nelson Paucca , Romaní Allende Freddy Gamaniel , Cervantes Ramón Edgard Francisco , Carrillo Flores Jorge Wilfredo , Cornejo del Carpio Manuel
Published: March 2022

A partir de los últimos días del mes de diciembre de 2019 hasta la actualidad, se han producido cambios radicales en los diferentes ámbitos de la sociedad debido a la propagación de la pandemia COVID-19, el campo educativo no fue ajeno al presente hecho. Por tanto, la investigación tuvo como objetivo el comparar las perspectivas de los estudiantes universitarios respecto  a la evaluación remoto  realizado  por parte de los docentes durante el ciclo académico 2020. Metodológicamente contó con el enfoque cuantitativo de tipo no experimental, diseño comparativo y método deductivo. Además, se tuvo en cuenta la técnica de encuesta y como instrumento el cuestionario. La muestra estuvo conformada por un total de 316 estudiantes, quienes sostienen que no existe coherencia lógica en el proceso de la evaluación por parte de los docentes durante el desarrollo de las clases síncronas.
DESIGN OF SHELL AND TUBE TYPE HEAT EXCHANGER FOR NANOFIBRIL CELLULOSE PRODUCTION PROCESS
Authors:   Departemen Pendidikan Kimia, Universitas Pendidikan Indonesia, Bandung, Indonesia, Nur Purnamasari Hanif , Kurniawan Teguh , Bayu Dani Nandiyanto Asep
Published: March 2022

Heat exchanger plays an important role in industry. In industrial applications, the type of heat exchanger that is often found is the shell and tube type heat exchanger. The aim of this paper is to of tube and shell type heat exchanger for nanofibril cellulose production applications. The method used is to design several assumptions and calculate parameters related to determining the performance of the heat exchanger. The parameters are calculated manually using the Microsoft Excel application. In this design, the TEMA standard is used as a reference. The result of this paper is the heat exchanger has 53 pcs of tubes with the effectiveness up to 89.21%. This indicates that the overall performance of the heat exchanger in cellulose nanofibril production applications can be further improved by selecting the right fluid, fluid flow rate, and other physical properties, as well as the number of tubes that will be required
Implementing SexEd programs for persons with disabilities: A Survey of Teachers' Views
Authors: Hanafy Ali Abdelnabbi Mohamed , Hassanein Hala Ahmed Suleiman
Published: March 2022

The aim was to investigate teachers' views regarding implementing SexEd programs for persons with IDs. Teachers' views regarding implementing SexEd programs for persons with IDs was studied. Teachers must be teaching in special education, both sexes (males and females). Participants were 180 teachers (females, n= 30, 16.6%, and males 150, 83.4%). No differences were found between the two sexes in their responses towards implementing SexEd programs for persons with IDs. Teacher's age had significant effect on respondents' responses towards implementing SexEd programs for persons with IDs. Old teachers had positive responses towards implementing SexEd programs for persons with IDs.
La artesanía del relato en escena: desparpajo y resistencia en La Vis Cómica de Mauricio Kartun
Authors: Bracciale Escalada Milena
Published: March 2022

.
Siglo de Oro Trans, de Gonzalo Demaría, reescritura de Don Gil de las Calzas Verdes de Tirso de Molina
Authors: Duarte Mónica , López Liliana
Published: March 2022

.
Una dramaturgia de la celebración: Malvinas. Canto al sentimiento de un pueblo (1992), de Osvaldo Buzzo y Néstor Zapata
Authors: Dubatti Ricardo
Published: March 2022

.
Multidimensional Scaling Analysis and an Application
Authors: KEKLİK Gülşah , ŞAHİN Mustafa
Published: March 2022

The aim of this study is to determine the factors affecting student’s failure. For this, a survey study was carried out. In the questionnaire applied to people of all ages and occupations living in Turkey between 2013 and 2015, inferences were made on the answers of 4183 people, 2928 of whom were men and 1255 were women, regarding the relationship between 26 variables that are closely related to the success factor. In this study, non-metric multidimensional scaling technique was used considering the Euclidean distance. This is because the data is not quantitative and smaller size solutions can be obtained. As a result of the analysis, Kruskal's stress value was observed as 0.00 and no significant difference was observed between the variables. Therefore, the observation of stress values in the range of (0-0.025) clearly reveals that there is a "complete" agreement between the variables. Another one words, the measure of the actual figure compatibility chart obtained S=0.00 and shows full compliance. In this case, we can say that the results obtained adequately reflect the data set we have.
Can Physical Fitness Performance be Used to Predict the BMI Status of First-Year Students? A Case Study from a University I n Southern Taiwan
Authors: Hsieh Chieh-Lun , Espeso Lorna A. , Sun Cheng-Yen , Hu Yung-Hsiang
Published: March 2022

This study aims to investigate the relationship between the physical fitness performance of college freshmen and the BMI body weight status (normal/ abnormal). We conducted case studies and obtained data on 7,160 participants aged 18 years from a university in southern Taiwan. All participants completed four physical fitness tests (seated forward bench, standing long jump, sit-ups, and cardiorespiratory endurance) and BMI assessments with the professional assistance of PE teachers. BMI is used to define the normal and abnormal state of body weight. Logistic regression analysis was used in this study. The results show that the four physical fitness tests currently implemented in college physical education can be used to predict whether the weight of the freshmen is normal. Cardiorespiratory endurance seems to be the most important feature for predicting the type of BMI (normal/abnormal), whether male or female. When the "cardiorespiratory endurance" of freshman students increases by a category, the probability of males belonging to the healthy weight category increases by 4.879 times, and the probability of females increases by 2.927 times. This study provides a new perspective for predicting whether the freshman's body weight is normal or not by using different types of college physical fitness test performance.
The Whore of Tamil Literature
Authors: J Santhamoorthy
Published: March 2022

Tamil literature is made up of four strands charity, meaning, pleasure and home. The most important of them is a pleasure. It is in this pleasure that the Illness Regulations are taught about the Code of Life for the Human Clan. There is much talk about the prevalence of one of the Ainthinai in the association literature, not just the message of the leader and the nest in the associated literature. Tamil literature does not lead many women to live, even though one's marriage to a single person. So, the goats lived a life of a married man and a daughter of the other, the lover, the slum, the concubine. News about whore is known for its abundance in the literature of Neethi Nool, Thirumanthiram, Ettuthogai, Silappathikaram, and Tholkappiyam.
ANALISIS PENYELESAIAN ISU PEMAJAKAN EKONOMI DIGITAL: STUDI KASUS GOOGLE ASIA PACIFIC Pte Ltd.
Authors: Poernomo Yosafat Cornelius , Irawan Ferry
Published: March 2022

Digitalization raises taxation issues for the market jurisdiction authority including Indonesia, both on the aspect of direct taxation and indirect taxation, due to the capability of the digital multinational entities (MNEs) to avoid physical presence to exercise a transaction with the customer in the market jurisdiction. In terms of indirect taxation, issues raised by Google Asia Pacific Pte Ltd (Singapore) related to the business to customer (B2C) model on service and intangible transactions to the consument in Indonesia, especially the nonregistered taxable business consument (nonPKP). In general, the consumption of services and intangibles from abroad by resident in Indonesia is taxed using the mechanism of reverse charge. Due to its ineffectivity and ineffeiciency at the implementation, in 2020, Indonesia government appointed several nonresident MNE including Google Asia Pacific Pte Ltd (Singapore) to collect the VATs. Meanwhile, issue in direct taxation raised by Google Asia Pacific is due to the provision of Indonesia and Singapore tax treaty that still oblige the degree of physical presence to measure the existence of permanent establishment. After the publication of BEPS Action 1: Final Report (2015), the Indonesian government has made several policy decisions, both in terms of domestic regulations to the international realm, such as the signing of multilateral instruments (MLI) and tax treaty negotiation. In addition, currently a negotiation is underway regarding the consensus on digital economy taxation proposals known as the two pillars. One of the proposals initiated was the first pillar proposal (unified approach) which focus on updating rules related to nexus and profit allocation. The purpose of this study is to identify the alternative for VAT and income taxation against Google Asia Pacific Ltd by considering the principles of international taxation. The research used qualitative method with a case study approach. The research data were collected using literature study.
BEI, PERUSAHAAN GO PUBLIC DAN TAX AVOIDANCE: STUDI SEKTOR OTOMOTIF TAHUN 2012-2018
Authors: Dea Cherena Chandra , Gazali Masfar
Published: March 2022

This purpose of this study to examine the effect of advertising cost, leverage, firm size and inventory intensity againts tax avoidance. This study used 5 variables that were thought to influence the occurrance of tax avoidance. The population in this study were manufacturing sub sector of automotive wich are listed in Indonesia Stock Exchange for the period 2012-2018. Tha sample used in this study amounted to 5 companies with a 7 years research period to obtain a total of 35 observation data. The analytical method used in this study is microsoft excel and eviews 9.0. The result of this study indicate that the variable advertising cost did not have a effect of tax avoidance. Leverage and firm size have a effect to tax avoidance and inventory intensity have a negative effect to tax avoidance
PASAR MODAL INDONESIA: ANALISIS PERTUMBUHAN SELAMA PANDEMI COVID-19
Authors: Sayadi Muhammad Hamdan
Published: March 2022

The purpose of this study is to evaluate the impact of the COVID-19 pandemic on the Indonesian Capital Market. Data analysis uses descriptive statistics by comparing the Indonesia Composite Index (ICI) growth, market capitalization, transaction volume, investors, total securities ownership, and value trading per month during 2020 and comparing them to 2019. The results show that the COVID-19 pandemic affects the growth and development of the Indonesian capital market during 2020 in the January-November period when compared to the previous year in the same period. The analysis results show that the ICI, market capitalization, transaction volume, trade value, and total securities ownership grew negatively during 2020 in the January-November period when compared to the same period in the previous year. However, amidst the negative growth of the Indonesian capital market, there is good news, namely that the number of the individual investors has increased during 2020 in the January-November period.
ANALYSIS OF WORKING CAPITAL MANAGEMENT AND PROFITABILITY AT PT KALBE FARMA, TBK.
Authors: Harahap Lily Rahmawati , Thoyib Ellys , Aryanti Rahmi
Published: March 2022

Kalbe Farma, Tbk is one of the large companies engaged in the pharmaceutical sector in Indonesia. PT Kalbe Farma, Tbk, as a large company that operates continuously and consistently, deserves becomes a reference for other pharmaceutical companies. Both these companies are still young and already growing and improved. This study aimed to analyze the management of working capital and profitability at PT. Kalbe Farma, Tbk, especially in dealing with an unfavorable situation caused by the Covid-19 pandemic. Good working capital management is very necessary for the company to make a profit. In general, inefficient working capital management has a significant effect on the level of profitability(Riyanto, 2011). The level of profitability is not optimal if the working capital turnover in the cash conversion cycle in the company’s operational activities is too long. Hence, the profit generated is not optimal. The result of the analysis of working capital management and profitability of PT Kalbe Farma, Tbk, from 2018 to 2021 shows that the ability to manage working capital and profitability is a good category. There was no significant reduction in results despite dealing with an unstable economic situation during the Covid-19 pandemic.
ANALISIS LAPORAN REALISASI ANGGARAN TERHADAP KINERJA KEUANGAN DAERAH PEMERINTAH KABUPATEN MUSI BANYUASIN
Authors: Septariani Jumania , Asoka Rano
Published: March 2022

This study aims to determine the regional financial performance of the Government of Musi Banyuasin Regency. The research method used by the author in this study is a quantitative method. The type of data used by the author in this study is secondary data in the form of budget realization  report. The results of the study stated that the financial performance of the Musi Banyuasin Regency Government was quite good. However, the Government of Musi Banyuasin Regency was still not independent in managing regional finances and was dependent on the central/provincial government. This was based on the fact that the average degree of decentralization ratio of the Musi Banyuasin Regency Government was 7.50% with the criteria of not being independent, the average financial independence ratio of the Musi Banyuasin Regency Government was 8.68% with very low criteria and the pattern of instructive relations. The average local tax effectiveness ratio of the Musi Banyuasin Regency Government was 91.57% with effective criteria. The average collection efficiency ratio of the Musi Banyuasin Regency Government was 7.71% with the criteria of being very efficient and the ratio of expenditure harmony at the Musi Banyuasin Regency Government was already good because the results of the operating expenditure ratio and the results of the capital expenditure ratio from 2015 to 2019 <100%.
PENGARUH KINERJA KEUANGAN TERHADAP NILAI PERUSAHAAN PERUSAHAAN PERTANIAN DI BEI TAHUN 2018
Authors: Wibowo Dea Ratna Putri , Relawati Rahayu , Shodiq Wahid Muhammad
Published: March 2022

Penelitian ini bertujuan untuk menguji bukti empiris pengaruh kinerja keuangan, ukuran perusahaan, dan struktur modal terhadap nilai perusahaan. Populasi yang digunakan dalam penelitian ini adalah 54 perusahaan di sektor pertanian yang terdaftar di Bursa Efek Indonesia tahun 2018. Sampel penelitian ini adalah 32 perusahaan yang dipilih berdasarkan teknik purposive sampling. Metode analisis data menggunakan analisis regresi linier berganda. Hasil penelitian ini menunjukkan bahwa kinerja keuangan dan struktur modal berpengaruh positif terhadap nilai perusahaan. Ukuran perusahaan berpengaruh negatif terhadap nilai perusahaan.