Browse Research Papers

Comparing Advanced Control Strategies to Eliminate Stick-Slip Oscillations in Drillstrings

In this paper, we present three methods to achieve reliable drillbit angular velocity control for deep drilling operations. We consider a multi-sectional drilling system with the bit off-bottom, which…

LDPC Coded Multi-User Massive MIMO Systems With Low-Complexity Detection

We design a low-density parity-check (LDPC) coded multi-user (MU) massive multiple-input multiple-output (MIMO) system with an iterative joint detection and decoding (JDD) algorithm. As a low-complexi…

Secure Real-Time Chaotic Partial Encryption of Entropy-Coded Multimedia Information for Mobile Devices: Smartphones

Smartphones penetration-rate continues expanding, from 44% in 2017 up to 59% expected increase in 2022 as reported by Strategy Analytics. At present, smartphones dominate the global mobile traffic, wh…

Mask Up: Academic-Community-Government Partnerships to Advance Public Health During COVID-19.

Rationing care in COVID-19: if we must do it, can we do better?

The COVID-19 pandemic has seen a proposal for frailty to be used as a rationing criterion. This commentary suggests circumstances under which that is defensible: in the face of lack of capacity to tre…

SARS-CoV-2: how safe is it to fly and what can be done to enhance protection?

With lockdown restrictions over coronavirus disease 2019 being relaxed, airlines are returning to the skies. Published evidence of severe acute respiratory syndrome (SARS) coronavirus 2 transmission o…

Acute dacryoadenitis in a patient with SARS-CoV-2 infection.

We describe a retrospective case report of dacryoadenitis associated with orbital inflammatory disease in a patient with confirmed SARS-CoV-2 infection.A 22-year-old previously fit and healthy male pr…

Overall management of emergency general surgery patients during the surge of the COVID-19 pandemic: an analysis of procedures and outcomes from a teaching hospital at the worst hit area in Spain.

To assess how the COVID-19 outbreak has affected emergency general surgery (EGS) care during the pandemic, indications for surgery, types of procedures, perioperative course, and final outcomes. This …

COVID-19 Policy Differences across US States: Shutdowns, Reopening, and Mask Mandates.

This work used event study to examine the impact of three policies (shutdowns, reopening, and mask mandates) on changes in the daily COVID-19 infection growth rate at the state level in the US (Februa…

A Novel Risk-Stratification Models of the High-Flow Nasal Cannula Therapy in COVID-19 Patients With Hypoxemic Respiratory Failure.

Background: High-flow nasal cannula (HFNC) has been recommended as a suitable choice for the management of coronavirus disease 2019 (COVID-19) patients with acute hypoxemic respiratory failure before …

COVID-19: a "black swan" and what animal breeding can learn from it.

Intensified thromboprophylaxis in COVID-19 critically ill patients: Is it enough?

Covid-19: The E484K mutation and the risks it poses.

Role of Tissue Factor in the Pathogenesis of COVID-19 and the Possible Ways to Inhibit It.

COVID-19 (Coronavirus Disease 2019) is a highly contagious infection and associated with high mortality rates, primarily in elderly; patients with heart failure; high blood pressure; diabetes mellitus…

The implications of COVID-19 in the ambient environment and psychological conditions.

The COVID-19 pandemic caused by SARS-CoV-2 has posed a huge threat to mankind, deeply endangering healthy states and influencing economic development. COVID-19 has important impacts on the environment…

Discovery of a New Oxygen Delivery Method During COVID-19 Pandemic: Wearing a Surgical Mask Over Oxygen Cannula.

Pulmonary Hypertension in COVID-19 Pneumoniae: It Is Not Always as It Seems.

A patient affected by COVID-19 pneumonia may develop pulmonary hypertension (PH) and secondary right ventricular (RV) involvement, due to lung parenchymal and interstitial damage and altered pulmonary…

Awareness of Human Factors in the operating theatres during the COVID-19 pandemic.

One of the priorities at our large Operating Theatres Department is to support awareness and basic education of the multi-disciplinary teams in clinical Human Factors, to help build competence and cap…

Appetitive Traits in a Population-Based Study of Polish Adolescents within the PLACE-19 Study: Validation of the Adult Eating Behavior Questionnaire.

Appetitive traits of food approach or food avoidance are commonly measured using the Adult Eating Behavior Questionnaire (AEBQ). However, there is no Polish version of the AEBQ validated for adolescen…

The values and limitations of mathematical modelling to COVID-19 in the world: a follow up report.

We previously described a mathematical model to simulate the course of the COVID-19 pandemic and try to predict how this outbreak might evolve in the following two months when the pandemic cases will …