Consideration of Trigger Mechanisms of Natural and Man-made Disasters in the Earth’s Geospheres

2021 ◽  
Vol 9 (2) ◽  
pp. 20-30
Author(s):  
A. Vorob'ev ◽  
Vladimir Dyachenko ◽  
Kirill Aleksandrovich Vorobyev
Keyword(s):  
Threshold Value ◽  
Graphic Representation ◽  
Trigger System ◽  
Trigger Mechanism ◽  
Earth’S Atmosphere ◽  
Trigger Signal ◽  
Earth's Atmosphere ◽  
Trigger Mechanisms

Have been presented the trigger mechanisms of accidents emergence in different Earth's Geospheres. Has been given the definition for the trigger mechanism of initiation of changes in geosystems. The threshold value for the starting (initiating) trigger signal has been detailed. The graphic representation of work of a trigger system has been presented, and its functioning has been explained. Various ways for switching of a trigger system have been revealed. The principles of the trigger impact on the troposphere, the lower part of the Earth's atmosphere, initiation of cyclones and earthquakes, and descent of avalanches and glacial mudflows have been detailed.

History of the Earth’s Atmosphere

1987 ◽  
Author(s):  
Michael I. Budyko ◽  
Alexander B. Ronov ◽  
Alexander L. Yanshin
Keyword(s):  
Earth’S Atmosphere ◽  
History Of ◽  
Earth's Atmosphere

USE OF AN ELECTRONIC DATA WAREHOUSE TO ENHANCE CARDIAC SURGICAL SITE SURVEILLANCE AT A LARGE CANADIAN CENTRE

2008 ◽  
Vol 31 (4) ◽  
pp. 21 ◽  
Author(s):  
G W Rose ◽  
V R Roth ◽  
K N Suh ◽  
M Taljaard ◽  
C Van Walraven ◽  
...  
Keyword(s):  
Infection Control ◽  
Surgical Site Infection ◽  
Data Warehouse ◽  
Stepwise Logistic Regression ◽  
Site Infection ◽  
Electronic Data ◽  
Trigger Mechanism ◽  
Trigger Tool ◽  
Infection Surveillance ◽  
Trigger Mechanisms

Background/Purpose: Surgical site infection surveillance to determineincidence is a key infection control activity. Case detection is labour-intensive, therefore most infection control programs use manual or simple electronic mechanisms to “trigger” chart review. However, such “trigger” mechanisms are also labour-intensive, and often of poor specificity. Our objective is to develop a complex trigger mechanism using data from an electronic data warehouse, to improve specificity of surveillance of surgical site infection compared to current trigger mechanisms. Methods: We will derive an electronic trigger tool for cardiac surgical site infection surveillance using a nested case-control design, among a cohort of all patients undergoing coronary artery bypass grafting, cardiac valve repairor replacement, or heart transplant at the University of Ottawa Heart Institute, from July 1 2004 to June 30 2007. We will perform a systematic literature review to identify potential trigger factors to include in the model, then construct the trigger tool by backwards stepwise logistic regression. The best-fit model will be used to calculate the probability of surgical site infection. We will select the threshold probability to use in surveillance by visual inspection of receiver-operator-characteristic curves. The accuracy of this electronic trigger mechanism will be compared to pre-existing manual and simple electronic mechanisms using relative true positive ratios and relative false positive ratios. Results/Conclusions: We have selected 200 cases of surgical site infection and 541 controls from among 3744 procedures performed during the study period. As of the date ofthis abstract we are still undertaking the systematic review.

THE ENERGIES AND MOLECULAR PARAMETERS INVOLVED IN THE REACTION OF CH + 1,3-BUTADIENE

2020 ◽  
Author(s):  
A. NIKOLAYEV ◽  
◽  
A. M. Mebel ◽  
V. N. Azyazov ◽  
◽  
...  
Keyword(s):  
Environmental Pollution ◽  
Combustion Products ◽  
Fuel Combustion ◽  
Molecular Parameters ◽  
Earth’S Atmosphere ◽  
Earth's Atmosphere ◽  
Reduce Emissions

This research is devoted to the problem of environmental pollution. The study of various pathways that reduce emissions of fuel combustion products into the Earth's atmosphere is still applicable today.

Physics and Technology of Sustainable Energy

2018 ◽  
Author(s):  
E. L. Wolf
Keyword(s):  
Quantum Physics ◽  
Fossil Fuels ◽  
Sustainable Energy ◽  
College Level ◽  
Adequate Treatment ◽  
Power Sources ◽  
Earth’S Atmosphere ◽  
Energy Technologies ◽  
Electric Power Grid ◽  
Earth's Atmosphere

This is a physics textbook describing, at a college level, the physics and technology needed to provide sustainable long-term energy, past the era of fossil fuels. A summary is given of global power generation and consumption, with estimates of times until conventional fuels will deplete. Sustainable power sources, largely those coming from the Sun directly or indirectly, are described. As sustainable energy must preserve the Earth’s atmosphere and climate, key elements of these topics are included. Key energy technologies in this book include photovoltaics, wind turbines and the electric power grid, for which the underlying physics is developed. Nuclear fusion is described in the context of the Sun’s energy generation, in a brief description of tokamak fusion reactors, and also to introduce ideas of quantum physics needed for adequate treatment of photovoltaic devices. Energy flow in and out of the Earth’s atmosphere is discussed, including the role of greenhouse gas impurities arising from fossil fuel burning as trapping heat and raising the Earth’s temperature. Discussion is included of the Earth’s climatic history and future. Exercises are included for each chapter.

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