Coronavirus in Espirito Santo | A Case Report on the Evolution of COVID-19 in an Onboard Population / Coronavírus no Espírito Santo | Um relatório de caso sobre a evolução da COVID-19 numa população a bordo

Crew member arrived in Brazil on August 20, 2020, rapid test for COVID-19 with a negative result. On the 28th, already on board, he developed: fever, cough and malaise. On the 29th, was closely monitored for 2 hours and 30 minutes. In the first hour, he presented hypothermia, high blood pressure and tachycardia, requiring oxygen therapy, he presented in the last 90 minutes to hypothermia, an abrupt drop in blood pressure and bradycardia, ultimately evolving to hypothermia, lack of blood pressure and electrical activity of the heart. A review of the protocol for coping with COVID-19 is required.

Workload-adaptive and task-specific support for cockpit crews: design and evaluation of an adaptive associate system

This article describes and validates a concept of a workload-adaptive and task-specific associate system for military helicopter crews. We introduce a cognitive agent that behaves like an additional, artificial crew member. It adapts the extent of support by identifying the current and future task situation and workload of the crew. By choosing different intervention strategies, the associate system dynamically changes the task sharing between the crew and automation. We implemented the associate system into a helicopter simulator. The system supports helicopter pilots during Manned-Unmanned Teaming missions, where the crew of a manned helicopter operates several unmanned aircraft from the cockpit. To evaluate the prototype, we conducted a pilot-in-the-loop campaign and analyzed situations where the association system prevents or corrects human error.

ANALYSIS OF THE STATE OF AIRCRAFT CREW MEMBER BY THE SPEECH USING GAUSSIAN MODELS OF MIXTURES

The work is devoted to the study of the effectiveness of the application of models of Gaussian mixtures for the recognition of abnormal deviations in the speaker's speech. The practical application of the developed algorithms for revealing the emotional state of the crew member by the phrase uttered by such crew member is proposed. The spectral characteristics of the speech signal are used as the main criterion for distinguishing using the Gaussian mixture model. In connection with a rather small sampling step in frequency and, accordingly, with the presence of 255 frequency components in the signal spectrum, it is proposed to compress the spectrum to 10 components. This approach made it possible to reduce the number of key parameters in the Gaussian model to 10, which, in turn, made it possible to simplify the analysis process when constructing multivariate distributions. To assess the quality of the proposed algorithm, test phrases were recorded. At the same time, various psychological states of the speaker were imitated. We used both simple unregulated speech structures and messages regulated in accordance with the Federal Aviation Rules when conducting radio exchange in civil aviation on the territory of the Russian Federation. Taking into account the limitations on the prior knowledge of the model and clustering by spectral characteristics, all recordings of the model were made by one speaker. Three classes of the speaker's emotional state were considered. At the output, the recognition system put such marks as a calm state, a tired state, a stressful state. Various states were artificially simulated during data preparation. On a test sample of 48 messages, a Gaussian model of 3 components and 10 parameters without preliminary training immediately allowed to achieve a result of about 65%, while the probability of recognizing the correct class with 3 equal classes a priori is 33%. As further research, it is proposed to apply preliminary training using neural networks or correlation algorithms. This approach will allow further clustering at a deeper level, when, for example, the gender of the speaker is determined, a typical message of the radio exchange is determined, and then the emotional state of the speaker is revealed.

An instance of rodent geophagy from Northern Saskatchewan

In 2006 a crew member of a mining exploration team working in the vicinity of Points North Landing, Saskatchewan, found a small carbonate rich glacial erratic that had been chewed by rodents. The erratic likely came from Precambrian bedrock exposures of similar material in the Many Islands Lake area of northeast Saskatchewan. The rodents were mainly consuming the rock for its high calcium content.

Studi On Person Over Board dalam Pendidikan dan Pelatihan Maritim di Polimarin Semarang

Person Over Board (POB) is one of the emergencies that still occurs on board, a passenger or crew member falls into the sea. This situation is very dangerous if it occurs in the middle of the ocean or in cold waters because of hypothermia which can cause unconsciousness and death within minutes. This research focuses on investigating the improvement of the response of polytechnic students during emergencies, namely Person over board (POB) with the support of manouver onboard training in Bridge Simulator as well as making decisions on safe maneuvering and precise ship response manouvre in POB rescue actions. This study uses descriptive methods to assess ship manouvre training especially when person over board (POB) among Indonesian maritime polytechnic students, which are designed for students and researchers to gather information about the conditions needed in the field of nautical studies. The rescue attempts of the Anderson, Williamson and Scharnow model of rescue turn are carried out in radar and arpa simulators, student responses with the support of manual maneuvers on board and vessel motion data which include time, distance, speed and direction of the ship or angle of target bearing. The accuracy of student responses made during a POB emergency does not always comply with the instructions in the Manouvre on Board manual. Errors occur at the beginning of the maneuver which could mean a negative impact that endangers POB safety. Safe and precise ship maneuverability in the POB situation is influenced by the time factor of the incident and when the POB is known.

ESTIMATION OF EVACUATION TIME OF PASSENGERS IN AIRCRAFT ACCIDENTS WITH FIRE IN AIRFIELD AREAS

Statistics show that the majority of aircraft accidents occurs in the vicinity of airfield areas. Yet the main factors leading to fatalities in these accidents are the forces encountered by human occupants in collision with obstacles and the presence of fire. It is possible to single out a group of “technically survivable” accidents from the total number of accidents, in which a crew member or passengers could have survived, if the evacuation took place in a timely manner. The share of such accidents is about 85–90%. However, up to 40% of passengers die in technically survivable accidents. Applicable protection systems are only adequate, if the passengers manage to exit the airplane and get to a safe distance within a limited timeframe. Although these systems have been sufficiently developed; this is one of the most significant problems in modern aviation. This means, that the study of possibilities and the development of the methods and means of passenger evacuation in aircraft accidents, specifically in and around airport areas, are relevant to be addressed.