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https://www.readbyqxmd.com/read/28107552/reflections-on-the-history-of-indoor-air-science-focusing-on-the-last-50-years
#1
Jan Sundell
The scientific articles and Indoor Air conference publications of the indoor air sciences (IAS) during the last 50 years are summarized. In total 7524 presentations, from 79 countries, have been made at Indoor Air conferences held between 1978 (49 presentations) and 2014 (1049 presentations). In the Web of Science 26,992 articles on indoor air research (with the word "indoor" as a search term) have been found (as of 1 Jan 2016) of which 70% were published during the last 10 years. The modern scientific history started in the 1970s with a question: "did indoor air pose a threat to health as did outdoor air?" Soon it was recognized that indoor air is more important, from a health point of view, than outdoor air...
January 20, 2017: Indoor Air
https://www.readbyqxmd.com/read/28056016/predicting-the-impact-of-intervention-strategies-for-sleeping-sickness-in-two-high-endemicity-health-zones-of-the-democratic-republic-of-congo
#2
Kat S Rock, Steve J Torr, Crispin Lumbala, Matt J Keeling
Two goals have been set for Gambian human African trypanosomiasis (HAT), the first is to achieve elimination as a public health problem in 90% of foci by 2020, and the second is to achieve zero transmission globally by 2030. It remains unclear if certain HAT hotspots could achieve elimination as a public health problem by 2020 and, of greater concern, it appears that current interventions to control HAT in these areas may not be sufficient to achieve zero transmission by 2030. A mathematical model of disease dynamics was used to assess the potential impact of changing the intervention strategy in two high-endemicity health zones of Kwilu province, Democratic Republic of Congo...
January 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28008825/simulating-the-elimination-of-sleeping-sickness-with-an-agent-based-model
#3
Pascal Grébaut, Killian Girardin, Valentine Fédérico, François Bousquet
Although Human African Trypanosomiasis is largely considered to be in the process of extinction today, the persistence of human and animal reservoirs, as well as the vector, necessitates a laborious elimination process. In this context, modeling could be an effective tool to evaluate the ability of different public health interventions to control the disease. Using the Cormas(®) system, we developed HATSim, an agent-based model capable of simulating the possible endemic evolutions of sleeping sickness and the ability of National Control Programs to eliminate the disease...
2016: Parasite: Journal de la Société Française de Parasitologie
https://www.readbyqxmd.com/read/27990636/factitious-disorder-in-a-patient-claiming-to-be-a-sexually-sadistic-serial-killer
#4
Christopher A Fischer, Mace Beckson, Park Dietz
Factitious disorder involves the conscious simulation of psychological or physiological symptoms of illness, for the purpose of fulfilling the unconscious desire to be taken care of or to assume the "sick role." Typically patients with factitious disorder simulate conditions that are designed to arouse feelings of empathy in care providers with the intention to engage them in caretaking. However, patients might also simulate conditions that arouse revulsion or rejection and still meet full diagnostic criteria for factitious disorder...
December 19, 2016: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/27939053/experimental-variation-of-social-stress-in-virtual-reality-feasibility-and-first-results-in-patients-with-psychotic-disorders
#5
Klaus Hesse, Philipp A Schroeder, Jonathan Scheeff, Stefan Klingberg, Christian Plewnia
BACKGROUND AND OBJECTIVES: Social interaction might lead to increased stress levels in patients with psychotic disorders. Impaired social stress tolerance is critical for social functioning and closely linked with symptom relapse and hospitalization. We present an interactive office built-up in virtual reality (VR). METHODS: Patients with psychotic disorders (PP, N = 26 including N = 5 dropouts) and matched healthy controls (HC, N = 20) were examined with a VR simulating an open-plan office...
November 17, 2016: Journal of Behavior Therapy and Experimental Psychiatry
https://www.readbyqxmd.com/read/27770585/comparison-of-a-virtual-older-driver-assessment-with-an-on-road-driving-test
#6
Ranmalee Eramudugolla, Jasmine Price, Sidhant Chopra, Xiaolan Li, Kaarin J Anstey
OBJECTIVES: To design a low-cost simulator-based driving assessment for older adults and to compare its validity with that of an on-road driving assessment and other measures of older driver risk. DESIGN: Cross-sectional observational study. SETTING: Canberra, Australia. PARTICIPANTS: Older adult drivers (N = 47; aged 65-88, mean age 75.2). MEASUREMENTS: Error rate on a simulated drive with environment and scoring procedure matched to those of an on-road test...
December 2016: Journal of the American Geriatrics Society
https://www.readbyqxmd.com/read/27747138/immersive-molecular-visualization-with-omnidirectional-stereoscopic-ray-tracing-and-remote-rendering
#7
John E Stone, William R Sherman, Klaus Schulten
Immersive molecular visualization provides the viewer with intuitive perception of complex structures and spatial relationships that are of critical interest to structural biologists. The recent availability of commodity head mounted displays (HMDs) provides a compelling opportunity for widespread adoption of immersive visualization by molecular scientists, but HMDs pose additional challenges due to the need for low-latency, high-frame-rate rendering. State-of-the-art molecular dynamics simulations produce terabytes of data that can be impractical to transfer from remote supercomputers, necessitating routine use of remote visualization...
May 2016: IEEE International Symposium on Parallel & Distributed Processing, Workshops and Phd Forum: [proceedings]
https://www.readbyqxmd.com/read/27662351/screening-and-mitigation-of-layperson-anxiety-in-aerospace-environments
#8
REVIEW
Robert A Mulcahy, Rebecca S Blue, Johnené L Vardiman, Tarah L Castleberry, James M Vanderploeg
INTRODUCTION: Anxiety may present challenges for commercial spaceflight operations, as little is known regarding the psychological effects of spaceflight on laypersons. A recent investigation evaluated measures of anxiety during centrifuge-simulated suborbital commercial spaceflight, highlighting the potential for severe anxiousness to interrupt spaceflight operations. METHODS: To pave the way for future research, an extensive literature review identified existing knowledge that may contribute to formation of interventions for anxiety in commercial spaceflight...
2016: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/27658590/impact-of-irrigation-extension-on-malaria-transmission-in-simret-tigray-ethiopia
#9
Bonhee Chung
Poor subsistence farmers who live in a semi-arid area of northern Ethiopia build irrigation systems to overcome water shortages. However, there is a high risk of malaria transmission when increased standing water provides more favorable habitats for mosquito breeding. This is a serious problem because there are many barriers to malaria control measures and health care systems in the area. Using a causal loop diagram and computer simulations, the author attempted to visually illustrate positive and negative feedbacks between mosquito and human populations in the context of Simret, which is a small village located in northern Ethiopia and is generally considered a malaria-free area...
August 2016: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/27633193/mitigating-simulator-adaptation-syndrome-by-means-of-tactile-stimulation
#10
Germán Gálvez-García, Javier Albayay, Lucio Rehbein, Francisco Tornay
Some drivers experience Simulator Adaptation Syndrome (SAS), a condition in which nausea, disorientation, dizziness, headache, and difficulty focusing, are exhibited when driving in a simulator. To reduce this syndrome, we investigated the efficacy of tactile stimulation (TS) on mitigating Simulator Adaptation Syndrome (SAS) in a driving simulation. Fifteen drivers (eight women; mean age = 24.07 years) participated in this experiment. We compared the total scores of the Simulator Sickness Questionnaire (SSQ) across two stimulation conditions (TS condition and no stimulation condition as a baseline measure)...
January 2017: Applied Ergonomics
https://www.readbyqxmd.com/read/27623835/-simulator-sickness-and-its-measurement-with-simulator-sickness-questionnaire-ssq
#11
REVIEW
Marcin P Biernacki, Robert S Kennedy, Łukasz Dziuda
One of the most common methods for studying the simulator sickness issue is the Simulator Sickness Questionnaire (SSQ) (Kennedy et al., 1993). Despite the undoubted popularity of the SSQ, this questionnaire has not as yet been standardized and translated, which could allow us to use it in Poland for research purposes. The aim of our article is to introduce the SSQ to Polish readers, both researchers and practitioners. In the first part of this paper, the studies using the SSQ are discussed, whereas the second part consists of the description of the SSQ test procedure and the calculation method of sample results...
2016: Medycyna Pracy
https://www.readbyqxmd.com/read/27539218/the-viewpoint-specific-failure-of-modern-3d-displays-in-laparoscopic-surgery
#12
Shinichiro Sakata, Philip M Grove, Andrew Hill, Marcus O Watson, Andrew R L Stevenson
PURPOSE: Surgeons conventionally assume the optimal viewing position during 3D laparoscopic surgery and may not be aware of the potential hazards to team members positioned across different suboptimal viewing positions. The first aim of this study was to map the viewing positions within a standard operating theatre where individuals may experience visual ghosting (i.e. double vision images) from crosstalk. The second aim was to characterize the standard viewing positions adopted by instrument nurses and surgical assistants during laparoscopic pelvic surgery and report the associated levels of visual ghosting and discomfort...
November 2016: Langenbeck's Archives of Surgery
https://www.readbyqxmd.com/read/27503112/feasibility-of-a-walking-virtual-reality-system-for-rehabilitation-objective-and-subjective-parameters
#13
Adrián Borrego, Jorge Latorre, Roberto Llorens, Mariano Alcañiz, Enrique Noé
BACKGROUND: Even though virtual reality (VR) is increasingly used in rehabilitation, the implementation of walking navigation in VR still poses a technological challenge for current motion tracking systems. Different metaphors simulate locomotion without involving real gait kinematics, which can affect presence, orientation, spatial memory and cognition, and even performance. All these factors can dissuade their use in rehabilitation. We hypothesize that a marker-based head tracking solution would allow walking in VR with high sense of presence and without causing sickness...
2016: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/27503039/frequency-not-amplitude-of-latency-affects-subjective-sickness-in-a-head-mounted-display
#14
RANDOMIZED CONTROLLED TRIAL
Amelia Kinsella, Ryan Mattfeld, Eric Muth, Adam Hoover
BACKGROUND: Interactions between frequency and amplitude of latency in head-mounted displays (HMDs) are thought to affect simulator sickness. Many studies have linked system latency to subjective sickness, but recent research has found that at least with the case of inertia-based head tracking technology, latency is not a constant; rather it varies systematically over time due to sensor errors and clock asynchronization. The purpose of this experiment was to further explore the relationship between frequency and amplitude of latency as they relate to subjective sickness experienced in an HMD...
July 2016: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/27411523/-a%C3%A2-new-age-of-mass-casuality-education-the-insitu-project-realistic-training-in-virtual-reality-environments
#15
D Lorenz, W Armbruster, C Vogelgesang, H Hoffmann, A Pattar, D Schmidt, T Volk, D Kubulus
BACKGROUND: Chief emergency physicians are regarded as an important element in the care of the injured and sick following mass casualty accidents. Their education is very theoretical; practical content in contrast often falls short. Limitations are usually the very high costs of realistic (large-scale) exercises, poor reproducibility of the scenarios, and poor corresponding results. OBJECTIVES: To substantially improve the educational level because of the complexity of mass casualty accidents, modified training concepts are required that teach the not only the theoretical but above all the practical skills considerably more intensively than at present...
September 2016: Der Anaesthesist
https://www.readbyqxmd.com/read/27405359/optimal-control-analysis-of-ebola-disease-with-control-strategies-of-quarantine-and-vaccination
#16
Muhammad Dure Ahmad, Muhammad Usman, Adnan Khan, Mudassar Imran
BACKGROUND: The 2014 Ebola epidemic is the largest in history, affecting multiple countries in West Africa. Some isolated cases were also observed in other regions of the world. METHOD: In this paper, we introduce a deterministic SEIR type model with additional hospitalization, quarantine and vaccination components in order to understand the disease dynamics. Optimal control strategies, both in the case of hospitalization (with and without quarantine) and vaccination are used to predict the possible future outcome in terms of resource utilization for disease control and the effectiveness of vaccination on sick populations...
July 13, 2016: Infectious Diseases of Poverty
https://www.readbyqxmd.com/read/27344385/random-forest-estimation-of-genomic-breeding-values-for-disease-susceptibility-over-different-disease-incidences-and-genomic-architectures-in-simulated-cow-calibration-groups
#17
S Naderi, T Yin, S König
A simulation study was conducted to investigate the performance of random forest (RF) and genomic BLUP (GBLUP) for genomic predictions of binary disease traits based on cow calibration groups. Training and testing sets were modified in different scenarios according to disease incidence, the quantitative-genetic background of the trait (h(2)=0.30 and h(2)=0.10), and the genomic architecture [725 quantitative trait loci (QTL) and 290 QTL, populations with high and low levels of linkage disequilibrium (LD)]. For all scenarios, 10,005 SNP (depicting a low-density 10K SNP chip) and 50,025 SNP (depicting a 50K SNP chip) were evenly spaced along 29 chromosomes...
September 2016: Journal of Dairy Science
https://www.readbyqxmd.com/read/27322638/driving-simulator-sickness-impact-on-driving-performance-influence-of-blood-alcohol-concentration-and-effect-of-repeated-simulator-exposures
#18
RANDOMIZED CONTROLLED TRIAL
Arne Helland, Stian Lydersen, Lone-Eirin Lervåg, Gunnar D Jenssen, Jørg Mørland, Lars Slørdal
Simulator sickness is a major obstacle to the use of driving simulators for research, training and driver assessment purposes. The purpose of the present study was to investigate the possible influence of simulator sickness on driving performance measures such as standard deviation of lateral position (SDLP), and the effect of alcohol or repeated simulator exposure on the degree of simulator sickness. Twenty healthy male volunteers underwent three simulated driving trials of 1h's duration with a curvy rural road scenario, and rated their degree of simulator sickness after each trial...
September 2016: Accident; Analysis and Prevention
https://www.readbyqxmd.com/read/27296784/analysis-of-a-model-of-gambiense-sleeping-sickness-in-humans-and-cattle
#19
A M Ndondo, J M W Munganga, J N Mwambakana, C M Saad-Roy, P van den Driessche, R O Walo
Human African Trypanosomiasis (HAT) and Nagana in cattle, commonly called sleeping sickness, is caused by trypanosome protozoa transmitted by bites of infected tsetse flies. We present a deterministic model for the transmission of HAT caused by Trypanosoma brucei gambiense between human hosts, cattle hosts and tsetse flies. The model takes into account the growth of the tsetse fly, from its larval stage to the adult stage. Disease in the tsetse fly population is modeled by three compartments, and both the human and cattle populations are modeled by four compartments incorporating the two stages of HAT...
2016: Journal of Biological Dynamics
https://www.readbyqxmd.com/read/27196271/diving-into-the-rat-plasma-proteome-to-get-to-the-bottom-of-decompression-sickness
#20
Ingrid Eftedal
Decompression sickness (DCS) is the collective term for an array of signs and symptoms triggered by ambient pressure reduction. It is of particular concern to divers as they decompress on ascend from depth to sea surface, but despite a long history of studies the determinants of DCS risk are incompletely understood and there are no validated biomarkers. In this issue of Proteomics Clinical Applications, Lautridou et al. [8] report on their search for DCS biomarkers in rats exposed to simulated diving. By comparing the plasma proteomes from animals showing neurological symptoms to those emerging from dives unaffected, they identified several high-abundance proteins not previously associated with DCS...
July 2016: Proteomics. Clinical Applications
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