Search for variability in Newton’s constant using local gravitational acceleration measurements

In a recent work, Dai [1] searched for a variability in Newton’s constant G using the IGETS based gravitational acceleration measurements. However, this analysis, obtained from χ 2 minimization, did not incorporate the errors in the gravitational acceleration measurements. We carry out a similar search with one major improvement, wherein we incorporate these aforementioned errors. To model any possible variation in the gravitational acceleration, we fit the data to four models: a constant value, two sinusoidal models, and finally, a linear model for the variation of gravitational acceleration. We find that none of the four models provides a good fit to the data, showing that there is no evidence for a periodicity or a linear temporal variation in the acceleration measurements. We then redid these analyses after accounting for an unknown intrinsic scatter. After this, we find that although a constant model is still favored over the sinusoidal models, the linear variation for G is marginally preferred over a constant value, using information theory-based methods.

Society for Cardiovascular Magnetic Resonance 2020 Case of the Week series

The Society for Cardiovascular Magnetic Resonance (SCMR) is an international society focused on the research, education, and clinical application of cardiovascular magnetic resonance (CMR). Case of the week is a case series hosted on the SCMR website (https://www.scmr.org) that demonstrates the utility and importance of CMR in the clinical diagnosis and management of cardiovascular disease. Each case consists of the clinical presentation and a discussion of the condition and the role of CMR in diagnosis and guiding clinical management. The cases are all instructive and helpful in the approach to patient management. We present a digital archive of the 2020 Case of the Week series of 11 cases as a means of further enhancing the education of those interested in CMR and as a means of more readily identifying these cases using a PubMed or similar search engine.

Peer Effects on Real-Time Search Behavior in Experimental Stock Markets

It is a well-documented phenomenon that individuals stop searching earlier than predicted by the optimal, risk-neutral stopping rule, leading to inefficient searches. Individuals' search behaviors during making investment decisions in financial markets can be easily affected by their peers. In this study, we designed a search game in a simplified experimental stock market in which subjects were required to search for the best sell prices for their stocks. By randomly assigning subjects into pairs and presenting them with real-time information on their peers' searches, we investigated the effects of peers' decisions on search behaviors. The results showed that two subjects in the same group with real-time peer information learned and engaged in similar search behaviors. However, this peer effect did not exist when subjects had access to feedback information on the ex-post best response. In addition, we found that the presence of information about peers' decisions alone had no significant impact on search efficiency, whereas access to both information on peers' decisions and feedback information significantly improved subjects' search efficiency.

Questions to the Article: Comparative Analysis of Search Strings in PubMed on the COVID-19 Pandemic (Preprint)

BACKGROUND The recent article published on November 27 in 2020 is well-written but remains several questionable issues that are required to clarifications further, particularly for readers who hope to replicate this study using a longer period of months instead of the original days from March 11 to May 19, 2020. OBJECTIVE Redo the study using a longer period of time to examine the difference from and similarity to the previous study and present results using visual representations. METHODS Similar search schemes were compared to the golden standard(LitCovid) using three metrics of sensitivity, precision, and F-score. We applied similar search schemes to extract publications related to COVID-19 from January to November in Pubmed Central(PMC). The Kano model was applied to present the study results divided into three groups of high sensitivity, high precision, and neutral. Comparison of publication counts was made using the line plot to display. RESULTS We observed that the comprehensive search scheme recommended by the original authors was ranked at the third placement instead of the first one shown in this study. A small number of articles extracted from the PMC were attributable to the reasons for schemes with (1) only one keyword of coronavirus, (2) that totally constrained by Wuhan, and (3) that hyphen and space misused in keyword terms. Scheme 2, authored by Shokraneh in the journal of BMJ, was ranked first, followed by Schemes 9 and 1 with F-scores at 97.9, 90.2, and 87.3, respectively. The single-term search COVID-19 performed best in terms of precision (99.9%) but not well in terms of sensitivity (76.6%) and F-score (86.7%). The term Wuhan virus performed the worst: 24.2% for sensitivity, 90.9% for precision, and 138.2% for F-score due to the reason for using AND condition in the search string. All 32 schemes were compared and displayed on the Kano diagram. CONCLUSIONS Different results were displayed using similar search schemes with a longer period of time from January to November in 2020. Scheme 2 is recommended for the bibliometric study related to COVID-19 in the future. The Kano diagram can be a visual display to compare search schemes based on precision(on Axis X), sensitivity(on Axis Y), and F-score(by bubble size) laid on a dashboard. CLINICALTRIAL Nil

Medyczne i humanistyczne zagadnienia związane z psychodermatologią w praktyce lekarza rodzinnego, ginekologa i seksuologa

A family doctor, as well as a sexologist, gynecologist, in his medical practice encounters problems related to skin diseases significantly affecting the sense of femininity or masculinity. An example of such an issue, especially in gynecology of developmental age, is the problem of skin changes associated with androgenization syndromes. Typical dermatological diseases are sometimes associated with enormous pain, not only physical, but also mental, resulting from the fact that skin disease processes significantly disfigure the body, lower self-esteem and significantly affect the sexual sphere. Selected aspects related to the holistic approach to the issue of pain and suffering, also related to skin lesions, are presented. This issue, like all medical fields, is a source of philosophical reflection. It is inseparable from psychodermatology. The experience of the SARS-CoV-2 coronavirus pandemic, taking into account skin lesions, also prompts a similar search.

The top 100 most cited articles on COVID-19

Purpose: The purpose of this study was to identify the 100 most cited publications focusing on COVID-19 to provide readers with useful historical information on current relevant research. Methods: A search of all databases and journals accessible in Elsevier’s Scopus was performed on May 13th, 2020. The document search was performed using query “COVID-19,” yielding 6,693 results. A similar search was performed using Thomson Reuter’s Web of Science, yielding 2,593 documents and fewer citations. The top 100 most cited papers were identified, and data were extracted. All references contained within the top 100 articles were collected. Statistical analysis was performed using R-Studio and Bibliometrix. Results: The top 100 most cited articles were published in 50 different journals from over 25 countries. The most cited article is “Clinical features of patients infected with 2019 novel coronavirus in Wuhan, China” by Huang et al., published in The Lancet with 1184 citations. Included are a list of the top 100 most cited articles, the most cited authors, the top five journals these publications most frequently appeared in, the most contributing countries, the top institutional affiliations, and the top international collaborations of the top 100 most cited publications on COVID-19. Conclusion: In this study, the top 100 most cited works regarding COVID-19 have been identified and analyzed. This study will serve as a historical reference for future research. This study will also provide an educational guide to facilitate effective evidence-based medical research and offer insight into the developments of COVID-19 research. Keywords: Scientometric, Bibliometric, COVID-19, Coronavirus

Comments on the Current Status of the Study of Optometry History

An online search for articles on the history of optometry and other healthcare fields is reported and is compared to a similar search conducted in 2007. A possible explanation for comparatively fewer articles on the history of optometry is explored. Brief comments are made on the significance of optometry history, along with suggestions on ways to enhance its study.

Great Britain and the United States: Two nations divided by an attitude?

Having studied attitudes towards usage problems such as the notorious split infinitive or the ubiquitous literally in British English as part of my doctoral thesis, I was intrigued by the sheer lack of scientific studies investigating such attitudes. What was even more intriguing was to discover that the same field and the same usage problems seem to have received a different treatment in the United States of America. While my search for previously conducted usage attitude studies in Great Britain has largely remained fruitless, besides two notable exceptions which I will discuss in detail below (see Section 3), a similar search for American usage attitude studies resulted in a different picture. Considerably more such studies seem to have been conducted in the US than in Great Britain. On top of cultural and linguistic differences between these two nations, it seems as if they also hold different attitudes towards studying attitudes towards usage problems. Now the following question arises: why do we find such contradictory scientific traditions in these two countries? In this paper, I will provide an overview of a selection of American and British usage attitude studies. Taking into account differences between the American and British studies with regard to the number of usage problems studied, the populations surveyed and the methods applied, I will attempt to capture manifestations of two seemingly diverging attitudes towards the study of usage problems. By doing so, I will provide a possible explanation for the lack of attention being paid to usage attitudes in Great Britain.

Dynamic Search Engine Platform for Cloud Service Level Agreements Using Semantic Annotation

This article describes how cloud applications are negotiated, deployed, monitored, evaluated and terminated through the service level agreements (SLA). The service definition & their objectives, performance measures, pricing, roles of the involved parties are stated as part of the SLA. Searching for SLA templates from the provider's place is considered as a cumbersome process for the consumer. Also, it is not guaranteed that retrieved SLAs always match with the consumer requirements. Hence, semantic search engine platforms for cloud SLA using a novel architecture are introduced here. SLA agreements are crawled from the web and annotation is performed in the agreement terms using SLA ontologies to fasten and improve the accuracy of the search process. In the proposed architecture, 3 ontologies are developed for SaaS, PaaS and IaaS as well as 140 SLA documents are gathered. Results revealed that the search efficacy is almost 90% in finding the desired SLA for the consumer to ease negotiation. Moreover, the performance is compared with similar search engine GoNTogle, and it was observed that proposed model produced good results.