Miracle-dz/UniFAR-FTUs huggingface dataset:
El rol de las partículas sólidas en la persistencia de bacterias en aguas recreativas y sus implicancias en la salud pública: un estudio preliminar

Microbiological pollution of recreational aquatic environments is a global concern since 80% of water-borne diseases are caused by microorganisms that reach the water through feces, organic and inorganic particles and other residues excreted by infected people. The assessment of microbial water quality is carried out through monitoring campaigns where fecal indicator bacteria are measured, according to legislation. Despite the advances made in detection and control methods, water-borne outbreaks are still reported. It is then possible that other environmental factors are influencing on the persistence of microorganisms in water. One of the main causes of persistence is the presence of solid particles. Microorganisms can be found and eventually transported in water as planktonic cells or attached to particles. During low flow rate events, some particles can sediment with microorganisms adsorbed, removing them from the water column and thus increasing their persistence. The resuspension process due to recreational activities or natural turbulence causes the return of these solid particles with the microorganisms attached and their probable desorption, becoming a health risk for users. The aim of this work was to evaluate if the presence of solid particles in different environmental matrices with recreational uses exerts some effect on the persistence of two indicator bacteria. Sedimentation-resuspension tests were carried out in the laboratory using four water matrices prepared with recreational ambient waters: two with low and two with high turbidity values. Known concentrations of Escherichia coli and Enterococcus faecalis were spiked on each matrix and homogenized. Samples were taken from the surface over time to evaluate their disappearance during sedimentation process. Turbidity decrease over time was also measured. When colony count was below the detection limit, a resuspension was performed, and bacteria were quantified again. A first-order decay model was applied from which different kinetic parameters were obtained. Although a greater persistence of Escherichia coli compared to Enterococcus faecalis was observed in the presence of solid particles, which was evidenced in the reappearance of culturable bacteria after resuspension of matrices with high turbidity, the decay constant rates was similar for matrices for both low and high turbidity. This would indicate that other water characteristics rather than turbidity may be influencing on their persistence. Finally, the determination of kinetic parameters is of quite importance due to their potential inclusion into risk assessment and water quality models, allowing a better analysis of the situation.
A Semi-Automated Method for Estimating Adélie Penguin Colony Abundance from a Fusion of Multispectral and Thermal Imagery Collected with Unoccupied Aircraft Systems

Monitoring Adélie penguin (Pygoscelis adeliae) populations on the Western Antarctic Peninsula (WAP) provides information about the health of the species and the WAP marine ecosystem itself. In January 2017, surveys of Adélie penguin colonies at Avian Island and Torgersen Island off the WAP were conducted via unoccupied aircraft systems (UAS) collecting optical Red Green Blue (RGB), thermal, and multispectral imagery. A semi-automated workflow to count individual penguins using a fusion of multispectral and thermal imagery was developed and combined into an ArcGIS workflow. This workflow isolates colonies using multispectral imagery and detects and counts individuals by thermal signatures. Two analysts conducted manual counts from synoptic RGB UAS imagery. The automated system deviated from analyst counts by −3.96% on Avian Island and by 17.83% on Torgersen Island. However, colony-by-colony comparisons revealed that the greatest deviations occurred at larger colonies. Matched pairs analysis revealed no significant differences between automated and manual counts at both locations (p > 0.31) and linear regressions of colony sizes from both methods revealed significant positive relationships approaching unity (p < 0.0002. R2 = 0.91). These results indicate that combining UAS surveys with sensor fusion techniques and semi-automated workflows provide efficient and accurate methods for monitoring seabird colonies in remote environments.
Smartphone Addiction and Conflict: An Incentive-Sensitisation Perspective of Addiction for Information Systems

ABSTRACT This study seeks to develop and test a theory-driven model of technology addiction within the context of smartphone use. Drawing on incentive-sensitisation theory, we proposed a nomological network that centres on a second-order factor of smartphone addiction from a psychological perspective. We empirically evaluated the proposed model against longitudinal data collected from 441 smartphone users. Our analysis from structural equation modelling indicates that our two-factor measurement of smartphone addiction (heightened desire and mobile social interaction) is a parsimonious alternative to the four-factor model. In addition, our findings suggest that addiction and its negative consequences differ in their effects on subsequent perceptions, such as perceived usefulness and perceived enjoyment. We also found that personal innovativeness in information technology and a perception of loneliness explain a large amount of variation in smartphone addiction. Overall, the present study significantly contributes to the information systems literature by offering a refined model of smartphone addiction that effectively describes pathological smartphone use while correcting critical biases in existing models.
Digital economy in the UK: regional productivity effects of early adoption

ABSTRACT Whilst the importance of internet-related technologies and digitization practices to economic performance is well documented, little is known about the long-term effects of the early adoption of such technologies. We use novel, geolocated data about the volume of online content from the Internet Archive to approximate the active engagement with digital economic activities. Using panel-data methods, we find significant positive and long-lasting effects of online content creation in 2000 on subsequent regional productivity levels up to 16 years later. Our findings highlight the sizeable effects of the digital economy that policy-makers should consider when developing future rollout strategies.
Comparison of Different Heat Stress Indices for Assessing Farmers’ Exposure to Heat Stress

1. Department of Occupational Health Engineering, School of Public Health, Iranshahr University of Medical Sciences, Iranshahr, Iran 2. Department of Occupational Health, School of Public Health and Safety, Shahaid Beheshti University of Medical Sciences, Tehran, Iran 3. Department of Occupational Health, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran 4. Department of Occupational Health, School of Public Health, Shiraz University of Medical Sciences, Shiraz, Iran
Belt and road initiative (BRI) supply chain risks: propositions and model development

Belt and road initiative (BRI) is a transcontinental endeavor strategically connecting supply chains (SCs) and economic infrastructures to ignite business activities and achieve trade benefits. However, the rising global SC failure costs and risks associated with this initiative (owing to unique geopolitical, economic and mega-connectivity involving over 70 countries) necessitate examining BRI SC risks. Yet, research on the subject remains limited, and the purpose of this paper is to address this gap in knowledge. ,A two-pronged approach was taken. First, a data sample of 554 articles was analyzed and 178 articles found relevant were used to present a systematic, structured framework of risk factors along operational, economic, financial, social and security dimensions. Then informed by the theory of risk management and supplemented by literature evidence, we have built a BRI SC risk model. ,The results presented through the model show that BRI SCs face a combination of risks triggered by operational processes, informational and environmental (PIE) deficiencies. Findings show that lack of risk and liability management, unbalanced risk-sharing partnerships, lack of transparency, inadequate project evaluation, incompatible corporate governance structures and cyber security all pose threats to BRI SCs specifically and SCs in general. ,Academically, the results facilitate theory development by identifying and proposing seven risk factors and modeling relationship among them and BRI SC risks outcome. The results also extend application of theory of risk management to SC context. ,The findings provide a decision-making tool for managers to assess risk factors in their SCs, thus enabling improved decision making to avoid, mitigate, transfer or accept risks. ,Identifies and proposes a set of seven risk factors that drive BRI SC risks. Develops a model of BRI SC risks which help build theory of SC risk management.
Observations of air–sea heat fluxes in the southwestern Atlantic under high‐frequency ocean and atmospheric perturbations

Turbulent air–sea heat fluxes were computed from in situ high‐frequency micrometeorological data during two research cruises performed in the southwestern Atlantic Ocean (SWAO) occurring in June 2012 and October 2014. Two different and dynamical areas were covered by the cruises: the Brazil‐Malvinas Confluence (BMC) and the Southern Brazilian Continental Shelf (SBCS). The eddy covariance (EC) method was used to estimate the air–sea sensible‐ and latent‐heat fluxes. This article compares these novel high‐frequency estimates of heat fluxes with bulk parametrizations made at the same location and time from independent measurements taken on board the ships. When comparing the EC and bulk‐estimated time series of sensible‐heat fluxes, we found a good agreement both in their magnitude and variability, with small bias (generally <20 W·m−2) between the datasets from the two study areas in the SWAO. However, the EC and bulk latent‐heat flux comparisons show large biases ranging from 75 W·m−2 to 100 W·m−2 in the SBCS and BMC, respectively. These biases were always associated with short‐term, high‐frequency environmental perturbations occurring either in the atmosphere or in the ocean with the majority related to strong wind burst events and large air–sea temperature gradients. The short period changes in atmospheric conditions were mostly related to the passage of transient synoptic systems over the two study areas. The large air–sea temperature gradients were mostly linked to the surface characteristics of the BMC and SBCS regions, where sharp oceanographic fronts are located. Our results are able to contribute to improving weather and climate simulations of the mid‐ to high latitudes of South America, a region largely influenced by the sea‐surface temperature patterns of the SWAO in combination with the frequent propagation of transient atmospheric systems.
Design of low profile co-axial fed high gain stacked patch antenna for Wi-Fi/WLAN/Wi-Max applications

Abstract In this article, a simple design of stacked radiating system with enhanced gain, impedance bandwidth, and radiation efficiency for mobile base station application is presented. The proposed antenna consists of a driven patch with a semicircular parasitic patch printed on the bottom layer and five parasitic patches printed on the top layer. The driven patch is feed by a co-axial probe and both the layers are separated in air. The second layer has four truncated circular parasitic patches on one side and one circular patch on the other side to enhance the directive gain acts as a directive reflector. This staked system encompasses some prominent features such as wide bandwidth, good gain, low profile, better radiation efficiency simple design, and integration for the mobile base station. Meanwhile, this configuration exhibits a bandwidth of 2 GHz with the minimized volume is 0.75 λ0 × 0.75 λ0 × 0.08 λ0. Experimentally validated results have an average and peak gain of 10.7 and 12.7 dBi, impedance bandwidth of more than 30.7% for |S11| < −10 dB, and radiation efficiency of above 86%. The proposed stacked radiating system finds its applications in Wi-Fi, WLAN, Wi-Max, Indoor UWB, and Marine Radar applications.
Management of water hyacinth (Eichhornia crassipes [Mart.] Solms) using bioagents in the Rift Valley of Ethiopia

This thesis presents a study on management of water hyacinth (Eichhornia crassipes [Mart.] Solms) using insects and fungal pathogens as bioagents. The main goal was to develop an effective biocontrol strategy for water hyacinth in the Rift Valley of Ethiopia. To this end, a field survey was conducted to assess the agro-ecological distribution of water hyacinth and of native fungal pathogens found in association with water hyacinth. We also performed laboratory and lath house experiments on (i) pathogenicity and host specificity of the fungal pathogens; (ii) adaptability, life table, efficacy and host specificity of the two Neochetina weevils; and (iii) the synergetic effects of integrated use of Neochetina weevils and fungal pathogen as bioagents. Survey results indicated that the weed is distributed in the Rift Valley water bodies located in low, mid and high altitude. The survey results also identified 25 fungal species found in association with water hyacinth that belonged to nine genera. Among the isolates, Alternaria alternata, A. tenuissima, and Alternaria spp. hold promise as possible bioagents of water hyacinth. Laboratory study on life cycle and development of Neochetina weevils indicated the two weevils took shorter generation time in Ethiopia than in Argentina but relatively similar to Kenya and Uganda. In Ethiopia, the two weevils produced four generations per year indicating their successful establishment. Feeding by adult weevils and tunneling by larvae significantly impacted the vigour and reproduction of water hyacinth plants. A herbivory loads of three pairs of N. bruchi and two pairs of N. eichhorniae showed the highest level of leaf damage and defoliated petioles. The study also reinforced that the two weevils are sufficiently host-specific. Finally, a study on integrated use of Neochetina weevils and an indigenous plant pathogen revealed that the two Neochetina weevils and the fungus A. alternata were together able to reduce the vegetative growth and fresh weight of water hyacinth plants considerably. This study recommends integrated use of fungal species and the two weevils to control water hyacinth. Implications of the findings are also discussed in the context of integrated water hyacinth management using the native fungal pathogens and the two weevils.
Malnutrition Prevalence and Consistency of Malnutrition Screening Tools and Anthropometric Measures Among Adult Cancer Patients in a Private Hospital: A Cross-Sectional Study

Objectives: Malnutrition is a common complication seen among cancer patients and may affect morbidity and mortality. Thus, evaluation of nutritional status and screening for malnutrition is crucial both for prevention and intervention. In this crosssectional study, we aimed to evaluate malnutrition prevalence and compare two malnutrition screening tools and anthropometric measures among adult cancer patients. Material and Method: The study was conducted in a private hospital with 59 patients between 7th of January and 7th of April in 2016. Nutritional screening and assessment tools and measurements were applied 48 hours after the patient was admitted to the hospital. We used two tools for detecting malnutrition which are Nutritional Risk Screening-2002 (NRS-2002) and Subjective Global Assessment (SGA). Anthropometric measurements were body mass index (BMI), triceps skinfold thickness (TST), and midupper arm circumference (MUAC). Results: According to NRS-2002 results, 41% of the patients were under nutritional risk and SGA results were consistent regarding malnutrition screening (p<0.05). SGA results showed that 15% of the patients were moderately malnourished and 26% of the patients had severe malnutrition. A significant relationship between tools and anthropometry was only found between TST and SGA (p<0.05). Conclusion: Malnutrition prevalence among oncology patients seems to be significant and screening is important for prevention and intervention. Both NRS-2002 and SGA tools are useful and consistent for screening malnutrition.
Multidentate amine ligand decorated hairy brushes on PS-DVB microbeads for Cd(II) removal from water samples

ABSTRACT Cadmium is one of the leading pollutants due to its persistence and high mobility in the environment. In this work, the sorption behavior of cadmium ions were investigated using a newly synthesized adsorbent, multidentate amine ligand decorated hairy brushes on PS-DVB microbeads. The adsorption parameters were examined to evaluate the optimum values for pH, contact time, temperature and adsorbent amount (pH of 7.0, 5.0 mg adsorbent amount, 60.0 min. contact time, 25°C). The adsorption process well fitted with Langmuir isotherm and pseudo-second order model. The promising results indicated that the sorbent is a good alternative in cadmium removal studies.
ELECTRONIC WORD OF MOUTH IN SOCIAL MEDIA INSTAGRAM

The purpose of this study was to analyze the extent of the influence of platform assistance, concern for others, expressing positive feelings, economic incentives, and helping the company on consumer purchase decisions in Ayam Geprek Mak Judes Medan. There are 98 respondents with a sampling technique that is probability sampling with an accidental sampling approach. Quantitative research methods with multiple linear regression analysis using SPSS analysis tool version 20.0. The results of this study indicate that platform assistance, expressing positive feelings, economic incentives, and helping the company have a positive and significant effect on consumer purchase decisions at Ayam Geprek Mak Judes Medan. While concern for others has a positive but not significant effect on consumer purchase decisions at Ayam Geprek Mak Judes Medan.
Designing synthetic microbial communities for effectual bioremediation: A review

Abstract Bioremediation is a better alternative and widely accepted approach used for efficient degradation of environmental pollutants released from industries, urban and agricultural activities due to its eco-friendly nature. Systems biology helps in the identification of new genes, proteins, metabolites, and metabolic pathways involved in bioremediation. Such information can be used for designing synthetic microbial communities that can degrade multiple recalcitrant pollutants simultaneously. This review gives a brief insight into various systems biology tools towards providing a greater understanding of microbial behaviour and improving the way of bioremediation. These techniques alone or in combination, provide a way to understand and improve the genetic potential of microorganisms to remediate various environmental contaminants efficiently. Further, this review also describes the successful employment of synthetic microbial consortium in the bioremediation. Moreover, In-silico tools are also described to analyse the data obtained through different laboratory experiments as well to predict the behaviour of microbial consortium towards the pollutants using different databases. Graphical Abstract
Cable Wakeboarding for the First Time: How Young People Make Sense of Risk in Adventure Recreation

Cable wakeboarding can be defined as a risky adventure recreation activity in which young people are the primary participants. Based on interviews and observations focusing on cable wakeboarding in Sweden, young people’s understanding of the risks associated with this activity was analysed. According to the thematic content analysis of the interview transcripts and field notes, the participants’ interpretations of risk were related to the social/spatial context of the adventure recreation activity. Furthermore, the analysis resulted in the identification of two themes: the content of the cable wakeboarding information and procedures, and the city beach community. Overall, the participants’ sense-making of risk in adventure recreation was explored and found to be framed by local attachment and a combination of individualistic and collectivistic perspectives of risk.
Carbon Fixation by Photosynthetic Mats Along a Temperature Gradient in a Tengchong Hot Spring

Geothermal hot springs, widely distributed on Earth, are important geological greenhouse gas sources which contribute large amounts of CO2 emission to the atmosphere. Exploring microbial carbon fixation in these springs is vital to fully understand the carbon budget in these terrestrial aquatic systems. In this study, carbon fixation rate by photosynthetic mats was determined with a 13C‐labeling approach along a gradient of temperature (~69– ~75 °C) in a geothermal pool at Rehai Park in Tengchong, Yunnan Province, China. Light experiments were performed to determine carbon fixation rate by both photosynthesis and chemosynthesis, while dark experiments were performed by chemosynthesis. The results showed that the highest carbon fixation rate (4,637 μg C/g TOC/hr) was obtained in light at the lowest temperature (~69 °C) in the afternoon (1:00 to 6:00 p.m.), most of which (96.7%) was contributed by photosynthesis. The lowest carbon fixation rate (138 μg C/g TOC/hr) was measured at the highest temperature (~75 °C), where chemosynthesis dominated over photosynthesis in carbon fixation. At these rates, the photosynthetic mats would fix 80% of CO2 emission during the daytime. At the end of daytime, the photosynthetic mats respired 34–70% of newly fixed organic carbon in 1 hr. Interestingly, both the carbon fixation rate and respiration rate decreased exponentially with increasing temperature, which may be ascribed to a temperature dependence of both microbial community composition and enzymatic activity. In summary, our study revealed that biological carbon fixation by photosynthetic mats is highly temperature dependent and significantly affects carbon cycling in hot springs.
Mistuning identification for coated blisks using small amount of experimental data

Because the coatings are likely to produce new mistuning which aggravates the vibration failure of coated blades, it is particularly important to study the mistuning identification for coated blades. In this study, the degrees of freedom of the whole disk of the coated blisk is completely constrained, and the orders of the dynamic model of the coated blisk based on component mode mistuning (CMM) method is further reduced. Based on this model, a novel mistuning identification method for the coated blade of the coated blisk by small amount of experimental data is proposed, which can identify the mass, stiffness and damping mistuning of the blade substrates and coatings. The input parameters with high amount of data, such as modal shape matrix, are removed from identification formulas, thus, both the amount of data for identification calculation and the workload of vibration testing are reduced. The mistuning identifications of the numerical case and actual case are carried out respectively, and the identification process of the mistuning identification method in this paper is compared with the one based on the classical CMM model. It is shown that the mistuning identification method is effective and feasible, and the identification efficiency is higher than the classical CMM identification method.