Comprehension, Perception, and Practice of Indians about COVID-19 Anticipating the Second Wave of the Pandemic

Background: We assessed knowledge, attitudes, practice, and perceptions about COVID-19 among a convenience sample of the general public in India anticipating the second wave of the pandemic. Methods: This questionnaire-based survey was conducted among the general population quarantined at various institutional quarantine facilities in the city of Nagpur, Maharashtra, India. Informed consent was obtained from each participant. The self-designed questionnaire comprised 25 questions regarding knowledge, eight for attitude, and ten for practice. Knowledge questions were responded to on a Yes/No basis with an additional ‘don’t know’ option. The true answer was given 1 point and false/I don’t know answers were given 0 point. Results: The majority of the participants were aware of COVID-19 (97.9%) and did not either wash or knew how to properly dispose of the used mask (88.02%). Only 10.96% of the participants agreed that they verify the social media posts shared over WhatsApp and Facebook on government authentic websites before sharing them with family and friends. Conclusion: Awareness about the virus, modes of spread, good practice, and an optimistic attitude is the prime requisite to curb the spread and to avoid the impending severity anticipating the second wave of the pandemic.

Bradycardia in Recent Heart Transplant: Will the Microscope Illuminate the True Answer?

Transplant recipients are at risk of developing rejection that may cause significant morbidity and mortality following transplantation. The clinical presentation of rejection may be atypical, leading to difficulties in diagnosis and management especially in cases with a nondiagnostic biopsy specimen. The emergence of artificial intelligence may aid in clinical decision making when traditional techniques are inconclusive.

Analisis Literasi Kimia Peserta Didik di SMAN 1 Batam pada Topik Hukum-Hukum Dasar Kimia dengan Model Rasch

This study aims to analyze the SMAN 1 Batam students’ chemical literacy level on the fundamental chemical laws topic according to the scientific literacy framework adapted by Shwartz. This research is a quantitative study with a sample of 50 XI grade science students from SMAN 1 Batam. Data is obtained from a chemical literacy test on the fundamental chemical laws topic answered by students; the data is analyzed with the Rasch model. The results showed students with the highest ability have a true answer with explanations that unrelated to the text of the items and students with the lowest ability have a wrong or a blank answer. Thus, it was concluded, students with the highest ability have a conceptual scientific literacy level on the hardest item, meanwhile, students with the lowest ability categorized as scientific illiteracy.

Enhanced or distorted wisdom of crowds? An agent-based model of opinion formation under social influence

We propose an agent-based model of collective opinion formation to study the wisdom of crowds under social influence. The opinion of an agent is a continuous positive value, denoting its subjective answer to a factual question. The wisdom of crowds states that the average of all opinions is close to the truth, i.e., the correct answer. But if agents have the chance to adjust their opinion in response to the opinions of others, this effect can be destroyed. Our model investigates this scenario by evaluating two competing effects: (1) agents tend to keep their own opinion (individual conviction), (2) they tend to adjust their opinion if they have information about the opinions of others (social influence). For the latter, two different regimes (full information vs. aggregated information) are compared. Our simulations show that social influence only in rare cases enhances the wisdom of crowds. Most often, we find that agents converge to a collective opinion that is even farther away from the true answer. Therefore, under social influence the wisdom of crowds can be systematically wrong.

The Quest for Certainty

The aim of this paper is to vindicate the Cartesian quest for certainty by arguing that to aim at certainty is a constitutive feature of cognition. My argument hinges on three observations concerning the nature of doubt and judgment: first, it is always possible to have a doubt as to whether p in so far as one takes the truth of p to be uncertain; second, in so far as one takes the truth of p to be certain, one is no longer able to genuinely wonder whether p is true; third, to ask the question whether p is to desire to receive a true answer. On this ground I clarify in what sense certainty is the aim of cognition. I then argue that in judging that p we commit ourselves to p’s being certain and that certainty is the constitutive norm of judgment. The paper as a whole provides a picture of the interplay between doubt and judgment that aims at vindicating the traditional insight that our ability to doubt testifies our aspiration to know with absolute certainty.

An Epistemic Bridge for Presupposition Projection in Questions

It is often assumed that presuppositions in wh-questions project universally. However, Schwarz & Simonenko (2018) note examples of such questions where universal projection is absent. I discuss their account and propose an alternative: by reasoning about the pragmatics of question-answer discourse, I arrive at a version of Stalnaker's bridge principle that is sensitive to what the speaker already knows about the true answer to the question. This Epistemic Bridge predicts universal projection for canonical information-seeking questions, but less than universal projection for certain non-canonical question uses such as quiz questions.

Single-choice or multiple true false questions (Kprime):Direct comparison of online tests in pharmacology over one year (Preprint)

BACKGROUND There remain doubts about whether multiple choice answer formats (single choice) offer the best option to encourage deep learning or whether SC formats simply lead to superficial learning or cramming. Moreover, cueing is always a drawback in the SC format. Another way to assess knowledge is true multiple-choice questions in which one or more answers can be true and the student is not aware of how many true answers are to be anticipated (K´ or Kprime question format). OBJECTIVE Here, we compared both single-choice answers (one true answer, SC) with Kprime answers (one to four true answers out of four answers, Kprime) for the very same learning objectives in a study of pharmacology in medical students. METHODS Two groups of medical students were randomly subjected to a formative online test: group A) was first given 15 SC (#1-15) followed by 15 different Kprime questions (#16-30). The opposite design was used for group B. RESULTS The mean number of right answers was higher for SC than for Kprime questions in group A (10.02 vs. 8.63, p < 0.05) and group B (9.98 vs. 6.66, p < 0.05). The number of right answers was higher for nine questions of SC compared to Kprime in group A and for eight questions in group B (pairwise T-Test, p < 0.05). Thus, SC is easier to answer than the same learning objectives in pharmacology given as Kprime questions. One year later, four groups were formed from the previous two groups and were again given the same online test but in a different order: the main result was that all students fared better in the second test than in the initial test; however, the gain in points was highest if initially mode B was given. CONCLUSIONS Kprime is less popular with students being more demanding, but could improve memory of subject matter and thus might be more often used by meidcal educators.

To Live a Life in Christ's Way: the Answer to a Truncated View of Transhumanism on Human Life

The rise of transhumanism reopens the perennial question about the essence of being human, this time exposed to the intentional transformation of human nature through the advancement of modern technology. This transformation includes options from how to overcome certain biological limitations to the creation and expansion of a new global mind and deepening of human consciousness. The authors believe that living a life in Christ's way is the true answer to a truncated view of transhumanism on human life. First, they briefly present two basic ways of understanding transhumanism and its tenuous view of man and his life. Then they show how transhumanistic ideas can be a challenge to Christianity. In the final chapter, they offer a holistic understanding of Jesus Christ as the true human being and the true God. They also posit that Jesus Christ and the life of Christians in His way can be found as the answer to an abbreviated view of transhumanism on human life.

An analysis of teacher candidates' epistemological beliefs: A qualitative study

This study aimed to determine epistemological beliefs of teacher candidates. For this aim, semi-structured interviews were conducted with 56 teacher candidates. The interviews were recorded and records related to epistemological beliefs were transcribed, and then descriptive analyses were conducted. The results of the analyses revealed three main belief dimension. Regarding the first dimension, the candidates associated between learning and effort, and they thought that the innate ability would improve via effort; as for the second dimension, the majority thought that knowledge construction process is slow and a relative concept; and regarding the third dimension, most of the teacher candidates were of three different perspectives - knowledge absolutely changes, it changes based on the field and it doesn't change. Also, most of the candidates stated that words possess more than one meaning, people attribute meanings to words on the basis of their experiences, and there is not only one true answer to scientific problems, since knowledge changes in time and scientists propose different solutions to problems.

Calibrating Noise to Sensitivity in Private Data Analysis

We continue a line of research initiated in Dinur and Nissim (2003); Dwork and Nissim (2004); and Blum et al. (2005) on privacy-preserving statistical databases. Consider a trusted server that holds a database of sensitive information. Given a query function $f$ mapping databases to reals, the so-called {\em true answer} is the result of applying $f$ to the database. To protect privacy, the true answer is perturbed by the addition of random noise generated according to a carefully chosen distribution, and this response, the true answer plus noise, is returned to the user. Previous work focused on the case of noisy sums, in which $f = \sum_i g(x_i)$, where $x_i$ denotes the $i$th row of the database and $g$ maps database rows to $[0,1]$. We extend the study to general functions $f$, proving that privacy can be preserved by calibrating the standard deviation of the noise according to the {\em sensitivity} of the function $f$. Roughly speaking, this is the amount that any single argument to $f$ can change its output. The new analysis shows that for several particular applications substantially less noise is needed than was previously understood to be the case. The first step is a very clean definition of privacy---now known as differential privacy---and measure of its loss. We also provide a set of tools for designing and combining differentially private algorithms, permitting the construction of complex differentially private analytical tools from simple differentially private primitives. Finally, we obtain separation results showing the increased value of interactive statistical release mechanisms over non-interactive ones.