Jens Nilsson

Multi-Agent Reinforcement Learning for Conflict Resolution in Air Traffic Control With Delayed Actions

Jens Nilsson, Jonas Unger, Gabriel Eilertsen

The aim of air traffic control is to guide aircraft from its departure to its destination in a safe and efficient manner. Keeping the aircraft separated in accordance with the regulations is one of the most crucial tasks, which in dense traffic …

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Self-Prioritizing Multi-Agent Reinforcement Learning for Conflict Resolution in Air Traffic Control with Limited Instructions

Jens Nilsson, Jonas Unger, Gabriel Eilertsen

Air traffic control (ATC) relies on a series of complex tasks, the most crucial aspect of which is to assure safe separation between aircraft. Due to the increase in air traffic, decision support systems and safe and robust automation of ATC tasks …

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Swedish civil air traffic control dataset

Jens Nilsson, Jonas Unger

The Swedish Civil Air Traffic Control (SCAT) dataset consists of 13 weeks of data collected from the area control in Sweden flight information region. The dataset consists of detailed data from almost 170,000 flights as well as airspace data and weather forecasts. …

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Stress vulnerability and the effects of moderate daily stress on sleep polysomnography and subjective sleepiness

Helena Petersen, Göran Kecklund, Paolo D’Onofrio, Jens Nilsson et autres

The purpose of this study was to investigate if and how sleep physiology is affected by naturally occurring high work stress and identify individual differences in the response of sleep to stress. Probable upcoming stress levels were estimated through weekly web questionnaire …

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Sleep after mobile phone exposure in subjects with mobile phone‐related symptoms

Arne Löwden, Torbjörn Åkerstedt, Michael Ingre, Clairy Wiholm et autres

Several studies show increases in activity for certain frequency bands (10-14 Hz) and visually scored parameters during sleep after exposure to radiofrequency electromagnetic fields. A shortened REM latency has also been reported. We investigated the effects of a double-blind radiofrequency exposure (884 …

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The effects of asking for verbal ratings of sleepiness on sleepiness and its masking effects on performance

Kosuke Kaida, Torbjörn Åkerstedt, Göran Kecklund, Jens Nilsson et autres

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Use of Subjective and Physiological Indicators of Sleepiness to Predict Performance during a Vigilance Task

Kosuke Kaida, Torbjörn Åkerstedt, Göran Kecklund, Jens Nilsson et autres

Sleepiness is a major risk factor for serious injury and death in accidents. Although it is important to develop countermeasures to sleepiness to reduce risks, it is equally important to determine the most effective timing for these countermeasures. To determine optimum timing …

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Fatigue in trans-Atlantic airline operations: diaries and actigraphy for two- vs. three-pilot crews.

Claire Anne Eriksen, Torbjörn Åkerstedt, Jens Nilsson

INTRODUCTION: The aim was to compare intercontinental flights with two-pilot and three-pilot crews with respect to fatigue/sleepiness and sleep, as there is considerable economic pressure on the airlines to use two-pilot crews. METHODS: Twenty pilots participated. Data were collected before, during, and …

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Disturbed sleep and fatigue in occupational burnout

Mirjam Ekstedt, Marie Söderström, Torbjörn Åkerstedt, Jens Nilsson et autres

OBJECTIVES: The purpose of this study was to investigate sleep with polysomnography and self-ratings and the diurnal pattern of sleepiness and fatigue in a group suffering from severe occupational burnout. METHOD: Twelve white-collar workers on long-term sick leave (>3 months) and 12 …

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Less effective executive functioning after one night's sleep deprivation

Jens Nilsson, Marie Söderström, ANDREAS U. KARLSSON, Mats Lekander et autres

The prefrontal cortex (PFC) is affected negatively by sleep deprivation (SD) and executive functioning is largely dependent on activity in the PFC. Earlier studies have focused on subsystems of executive functioning, and tests of executive functioning have shown both low reliability and …

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Sleep and Sleepiness in Young Individuals with High Burnout Scores

Marie Söderström, Mirjam Ekstedt, Torbjörn Åkerstedt, Jens Nilsson et autres

STUDY OBJECTIVES: Burnout is a growing health problem in Western society. This study aimed to investigate sleep in subjects scoring high on burnout but still at work. The purpose was also to study the diurnal pattern of sleepiness, as well as ratings …

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