Expressing Trust with Temporal Frequency of User Interaction in Online Communities

Reputation systems concern soft security dynamics in diverse areas. Trust dynamics in a reputation system should be stable and adaptable at the same time to serve the purpose. Many reputation mechanisms have been proposed and tested over time. However, the main drawback of reputation management is that users need to share private information to gain trust in a system such as phone numbers, reviews, and ratings. Recently, a novel model that tries to overcome this issue was presented: the Dynamic Interaction-based Reputation Model (DIBRM). This approach to trust considers only implicit information automatically deduced from the interactions of users within an online community. In this primary research study, the Reddit and MathOverflow online social communities have been selected for testing DIBRM. Results show how this novel approach to trust can mimic behaviors of the selected reputation systems, namely Reddit and MathOverflow, only with temporal information

Assessing placement of nasoduodenal tube and its usefulness in maintaining nutrition in critically ill patients

ABSTRACT Nutritional supplements to the critically ill patients are one of the major issues to be discussed. Enteric feeding is advantageous over parentral feeding because it maintains gut integrity and prevents bacterial translocation. Small intestinal feeding shows significant beneficial results. Nasoduodenal tube placement and its confirmation by serial pH monitoring and by radiological examination was done; and time taken to reach duodenum was assessed. This study was done in 40 critically ill patients, who were divided into two groups (group 1 and Group2). Early enteric feeding via a nasoduodenal tube was found to be preferable with parentral therapy when there are no contraindications. Advantages of nasoduodenal tube feeding in critical ill patients were that feeding can be continued even in the absence of bowel sounds and passage of flatus. Insignificant complications were noted

The detection and location estimation of disasters using Twitter and the identification of Non-Governmental Organisations using crowdsourcing

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Wastewater Surveillance for SARS-CoV-2 on College Campuses: Initial Efforts, Lessons Learned, and Research Needs

Wastewater surveillance for the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is an emerging approach to help identify the risk of a coronavirus disease (COVID-19) outbreak. This tool can contribute to public health surveillance at both community (wastewater treatment system) and institutional (e.g., colleges, prisons, and nursing homes) scales. This paper explores the successes, challenges, and lessons learned from initial wastewater surveillance efforts at colleges and university systems to inform future research, development and implementation. We present the experiences of 25 college and university systems in the United States that monitored campus wastewater for SARS-CoV-2 during the fall 2020 academic period. We describe the broad range of approaches, findings, resources, and impacts from these initial efforts. These institutions range in size, social and political geographies, and include both public and private institutions. Our analysis suggests that wastewater monitoring at colleges requires consideration of local information needs, sewage infrastructure, resources for sampling and analysis, college and community dynamics, approaches to interpretation and communication of results, and follow-up actions. Most colleges reported that a learning process of experimentation, evaluation, and adaptation was key to progress. This process requires ongoing collaboration among diverse stakeholders including decision-makers, researchers, faculty, facilities staff, students, and community members

Toxicity, Tunneling and Feeding Behavior of the Termite, Coptotermes vastator, in Sand Treated with Oil of the Physic Nut, Jatropha curcas

Oil of the physic nut, Jatropha curcas L. (Malpighiales: Euphorbiaceae), was evaluated in the laboratory for its barrier and repellent activity against the Philippine milk termite Coptotermes vastator Light (Isoptera: Rhinotermitidae). The study showed that J. curcas oil had anti-feeding effect, induced reduction in tunneling activity and increased mortality in C. vastator. Behavior of termites exposed to sand treated with J. curcas oil indicated that it is toxic or repellent to C. vastator. Toxicity and repellent thresholds, were higher than those reported for other naturally occurring compounds tested against the Formosan subterranean termite

Mental health training for community maternity workers in Nepal

Background: Mental health is a difficult topic to discuss in Nepal. This makes it hard for front-line maternity-care providers to start a discussion about mental health issues with women. As Nepal has not yet recognised midwifery as a profession, this UK-funded programme (THET) aims to train community health workers i.e. Auxiliary Nurse Midwives (ANMs) on mental health issues related to pregnancy. Purpose/Objective: This needs assessment, of all ANMs working in one district, assesses knowledge of perinatal mental health issues and future training needs. Method: This quantitative study used a structure questionnaire in Nepali at the start of the training of ANMs. The questions covered knowledge, views on mental health and illness and previous training on the topic. Ethical approval was granted by the Nepal Health Research Council (NHRC). Key Findings: In total 74 questionnaires were returned (out of 76). With 97% of ANMSs reporting they never had specific training issues around perinatal mental health. Their knowledge on perinatal mental health is poor, half of them are not aware that pregnancy and childbirth can cause mental illness. People do not talk openly about mental health problem in their local community. Most ANM thought specialised training on perinatal mental health would be useful. Discussion: Mental health in pregnancy/childbirth is often ignored especially in low-income countries like Nepal. In a country without recognised midwives there is a great need to improve attitudes and skills among community-based maternity workers who lacking training on maternity-related mental health issues. There is a great need for a national curriculum to facilitate relevant training

Minimizing errors in RT-PCR detection and quantification of SARS-CoV-2 RNA for wastewater surveillance

Wastewater surveillance for pathogens using reverse transcription-polymerase chain reaction (RT-PCR) is an effective and resource-efficient tool for gathering community-level public health information, including the incidence of coronavirus disease-19 (COVID-19). Surveillance of Severe Acute Respiratory Syndrome Coronavirus-2 (SARS-CoV-2) in wastewater can potentially provide an early warning signal of COVID-19 infections in a community. The capacity of the world's environmental microbiology and virology laboratories for SARS-CoV-2 RNA characterization in wastewater is increasing rapidly. However, there are no standardized protocols or harmonized quality assurance and quality control (QA/QC) procedures for SARS-CoV-2 wastewater surveillance. This paper is a technical review of factors that can cause false-positive and false-negative errors in the surveillance of SARS-CoV-2 RNA in wastewater, culminating in recommended strategies that can be implemented to identify and mitigate some of these errors. Recommendations include stringent QA/QC measures, representative sampling approaches, effective virus concentration and efficient RNA extraction, PCR inhibition assessment, inclusion of sample processing controls, and considerations for RT-PCR assay selection and data interpretation. Clear data interpretation guidelines (e.g., determination of positive and negative samples) are critical, particularly when the incidence of SARS-CoV-2 in wastewater is low. Corrective and confirmatory actions must be in place for inconclusive results or results diverging from current trends (e.g., initial onset or reemergence of COVID-19 in a community). It is also prudent to perform interlaboratory comparisons to ensure results' reliability and interpretability for prospective and retrospective analyses. The strategies that are recommended in this review aim to improve SARS-CoV-2 characterization and detection for wastewater surveillance applications. A silver lining of the COVID-19 pandemic is that the efficacy of wastewater surveillance continues to be demonstrated during this global crisis. In the future, wastewater should also play an important role in the surveillance of a range of other communicable diseases