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https://www.readbyqxmd.com/read/29328781/normalization-of-deviation-quotation-error-in-human-factors
#1
Jordan Lock, Chris Bearman
Objective The objective of this paper is to examine quotation error in human factors. Background Science progresses through building on the work of previous research. This requires accurate quotation. Quotation error has a number of adverse consequences: loss of credibility, loss of confidence in the journal, and a flawed basis for academic debate and scientific progress. Quotation error has been observed in a number of domains, including marine biology and medicine, but there has been little or no previous study of this form of error in human factors, a domain that specializes in the causes and management of error...
January 1, 2018: Human Factors
https://www.readbyqxmd.com/read/29328119/standoff-ultracompact-micro-raman-sensor-for-planetary-surface-explorations
#2
M Nurul Abedin, Arthur T Bradley, Anupam K Misra, Yingxin Bai, Glenn D Hines, Shiv K Sharma
We report the development of an innovative standoff ultracompact micro-Raman instrument that would solve some of the limitations of traditional micro-Raman systems to provide a superior instrument for future NASA missions. This active remote sensor system, based on a 532 nm laser and a miniature spectrometer, is capable of inspection and identification of minerals, organics, and biogenic materials within several centimeters (2-20 cm) at a high 10 μm resolution. The sensor system is based on inelastic (Raman) light scattering and laser-induced fluorescence...
January 1, 2018: Applied Optics
https://www.readbyqxmd.com/read/29327534/gastric-angioinvasive-mucormycosis-in-immunocompetent-adult-a-rare-occurrence
#3
Mukesh Nasa, Zubin Sharma, Lipika Lipi, Randhir Sud
Mucormycosis is a rare, opportunistic fungal infection that occurs almost exclusively in immunocompromised hosts such as patients with diabetes mellitus, leukemia, lymphoma, renal disease, septicemia, burns, malnutrition, and following long-term treatment with steroids and antibiotics. Based on the clinical presentation and involvement, mucormycosis is classified as six major forms, namely, rhinocerebral, pulmonary, cutaneous, gastrointestinal (GI), disseminated and miscellaneous, with rhinocerebral and pulmonary being the common forms...
December 2017: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/29327060/optical-coherence-tomography-analysis-of-the-optic-nerve-head-and-surrounding-structures-in-long-duration-international-space-station-astronauts
#4
Nimesh Patel, Anastas Pass, Sara Mason, Charles R Gibson, Christian Otto
Importance: After long-duration spaceflight, morphological changes in the optic nerve head (ONH) and surrounding tissues have been reported. Objective: To develop methods to quantify ONH and surrounding tissue changes using preflight and postflight optical coherence tomographic scans of the ONH region. Design, Setting, and Participants: Two separate analyses were done on retrospective data, with the first comparing a preflight group with a control group, followed by preflight to postflight analysis...
January 11, 2018: JAMA Ophthalmology
https://www.readbyqxmd.com/read/29326868/essential-thrombocytemia-following-immune-thrombocytopenia-with-jak2v617f-mutation
#5
Giovanni Caocci, Sandra Atzeni, Monica Usai, Giorgio La Nasa
JAK2V617F mutation is found in about 60% of cases of essential thrombocytemia (ET) and represents a driving mutation. Immune thrombocytopenia (ITP) is an autoimmune disease characterized by a low platelet (PLT) count. So far, only 2 reports described ET following ITP. For the first time we analyzed in a patient the JAK2V617F allele burden at ITP onset occurred 13 years before the ET diagnosis and found the presence of a small clone JAK2V617F positive clone (3%) raised to 27% in the following years. The association of ET and ITP could suggest similar pathogenetic mechanisms that should be further investigated...
2018: Leukemia Research Reports
https://www.readbyqxmd.com/read/29307333/the-16th-international-twin-congress-highlights-from-madrid-twin-research-twin-study-of-partner-aggression-abo-incompatibility-in-dizygotic-twins-growth-discordance-in-a-monoamniotic-twin-pair-quick-note-on-twin-implantation-in-the-media-long-lost-twins-found
#6
Nancy L Segal
Highlights from the 16th International Twin Congress, held in Madrid, Spain from November 16-18, 2017, are presented. The Twin Congress, formerly held every three years, now takes place biennially with a single-day meeting organized during the off years. This meeting is the largest gathering of scientific twin researchers, medical personnel, and representatives of multiple birth organizations in the world. This overview is followed by reviews of recent twin research and commentary concerning partner aggression, ABO incompatibility in dizygotic twins, growth discordance in a monoamniotic twin pair and twin implantation...
January 8, 2018: Twin Research and Human Genetics: the Official Journal of the International Society for Twin Studies
https://www.readbyqxmd.com/read/29300038/ben-barres-nasa-missions-and-compulsory-vaccines
#7
(no author information available yet)
No abstract text is available yet for this article.
January 4, 2018: Nature
https://www.readbyqxmd.com/read/29300029/antarctic-dinosaurs-fashion-from-fruit-nasa-at-60-hot-tickets-for-2018
#8
Nicola Jones
No abstract text is available yet for this article.
January 4, 2018: Nature
https://www.readbyqxmd.com/read/29290638/estimating-surface-soil-moisture-from-smap-observations-using-a-neural-network-technique
#9
J Kolassa, R H Reichle, Q Liu, S H Alemohammad, P Gentine, K Aida, J Asanuma, S Bircher, T Caldwell, A Colliander, M Cosh, C Holifield Collins, T J Jackson, J Martínez-Fernández, H McNairn, A Pacheco, M Thibeault, J P Walker
A Neural Network (NN) algorithm was developed to estimate global surface soil moisture for April 2015 to March 2017 with a 2-3 day repeat frequency using passive microwave observations from the Soil Moisture Active Passive (SMAP) satellite, surface soil temperatures from the NASA Goddard Earth Observing System Model version 5 (GEOS-5) land modeling system, and Moderate Resolution Imaging Spectroradiometer-based vegetation water content. The NN was trained on GEOS-5 soil moisture target data, making the NN estimates consistent with the GEOS-5 climatology, such that they may ultimately be assimilated into this model without further bias correction...
January 2018: Remote Sensing of Environment
https://www.readbyqxmd.com/read/29276490/dual-frequency-head-maps-a-new-method-for-indexing-mental-workload-continuously-during-execution-of-cognitive-tasks
#10
Thea Radüntz
One goal of advanced information and communication technology is to simplify work. However, there is growing consensus regarding the negative consequences of inappropriate workload on employee's health and the safety of persons. In order to develop a method for continuous mental workload monitoring, we implemented a task battery consisting of cognitive tasks with diverse levels of complexity and difficulty. We conducted experiments and registered the electroencephalogram (EEG), performance data, and the NASA-TLX questionnaire from 54 people...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/29261429/baseline-intraocular-pressure-is-associated-with-subjective-sensitivity-to-physical-exertion-in-young-males
#11
Jesús Vera, Raimundo Jiménez, José Antonio García, José Cesar Perales, David Cárdenas
PURPOSE: The purposes of this study were to (a) investigate the effect of physical effort (cycling for 60 min at 60 ± 5% of individually computed reserve heart-rate capacity), combined with 2 different levels of cognitive demand (2-back, oddball), on intraocular pressure (IOP) and subjective judgments of perceived exertion (ratings of perceived exertion [RPE]), affect (Affective Valence subscale of the Self-Assessment Manikin [SAM]), and mental workload (National Aeronautics and Space Administration Task Load Index [NASA-TLX]); and (b) ascertain whether baseline IOP, measured before exercise, is associated with individual differences in subjective assessments of effort and affective response during exercise...
December 20, 2017: Research Quarterly for Exercise and Sport
https://www.readbyqxmd.com/read/29241156/incidence-of-cutaneous-malignant-melanoma-in-iranian-provinces-and-american-states-matched-on-ultraviolet-radiation-exposure-an-ecologic-study
#12
Roxana Moslehi, Nur Zeinomar, Francis P Boscoe
OBJECTIVES: Ultraviolet radiation (UVR), with UVB and UVA as the relevant components, is a risk factor for melanoma. Complete ascertainment and registration of melanoma in Iran was conducted in five provinces (Ardabil, Golestan, Mazandaran, Gilan and Kerman) during 1996-2000. The aim of our study was to compare population-based incidence data from these provinces with rates in the United States (US) while standardizing ambient UVR. METHODS: Population-based rates representing all incident cases of melanoma (1996-2000) across the five Iranian provinces were compared to rates of melanoma among white non-Hispanics in the US...
December 11, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/29233245/occupational-specific-strength-predicts-astronaut-related-task-performance-in-a-weighted-suit
#13
Andrew Taylor, Christopher J Kotarsky, Colin W Bond, Kyle J Hackney
BACKGROUND: Future space missions beyond low Earth orbit will require deconditioned astronauts to perform occupationally relevant tasks within a planetary spacesuit. The prediction of time-to-completion (TTC) of astronaut tasks will be critical for crew safety, autonomous operations, and mission success. This exploratory study determined if the addition of task-specific strength testing to current standard lower body testing would enhance the prediction of TTC in a 1-G test battery. METHODS: Eight healthy participants completed NASA lower body strength tests, occupationally specific strength tests, and performed six task simulations (hand drilling, construction wrenching, incline walking, collecting weighted samples, and dragging an unresponsive crewmember to safety) in a 48-kg weighted suit...
January 1, 2018: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/29225719/methane-optical-density-measurements-with-an-integrated-path-differential-absorption-lidar-from-an-airborne-platform
#14
Haris Riris, Kenji Numata, Stewart Wu, Brayler Gonzalez, Michael Rodriguez, Stan Scott, Stephan Kawa, Jianping Mao
We report on an airborne demonstration of atmospheric methane (CH4) measurements with an Integrated Path Differential Absorption (IPDA) lidar using an optical parametric amplifier (OPA) and optical parametric oscillator (OPO) laser transmitter and sensitive avalanche photodiode detector. The lidar measures the atmospheric CH4 absorption at multiple, discrete wavelengths near 1650.96 nm. The instrument was deployed in the fall of 2015, aboard NASA's DC-8 airborne laboratory along with an in-situ spectrometer and measured CH4 over a wide range of surfaces and atmospheric conditions from altitudes of 2 km to 13 km...
July 2017: Journal of Applied Remote Sensing
https://www.readbyqxmd.com/read/29220572/martian-redox-chemistry-oxygen-reduction-in-low-temperature-magnesium-perchlorate-brines
#15
Joseph Elliott, Kamonwad Ngamchuea, Christopher Batchelor-McAuley, Richard G Compton
NASA has a mandate to send humans to Mars by 2033. Recent discoveries regarding Mars include the likely presence of low temperature liquid brines on the planet's surface. This work investigates redox chemistry in near saturated aqueous 2.8 M Mg(ClO4)2 at temperatures as low as -34oC. These conditions are comparable to those thought to be found on the Martian surface. In particular electro-reduction of oxygen is studied and the diffusion coefficient and solubility of this important redox species established.
December 8, 2017: Journal of Physical Chemistry Letters
https://www.readbyqxmd.com/read/29217966/lpv-modeling-of-a-flexible-wing-aircraft-using-modal-alignment-and-adaptive-gridding-methods
#16
Ali Khudhair Al-Jiboory, Guoming Zhu, Sean Shan-Min Swei, Weihua Su, Nhan T Nguyen
One of the earliest approaches in gain-scheduling control is the gridding based approach, in which a set of local linear time-invariant models are obtained at various gridded points corresponding to the varying parameters within the flight envelop. In order to ensure smooth and effective Linear Parameter-Varying control, aligning all the flexible modes within each local model and maintaining small number of representative local models over the gridded parameter space are crucial. In addition, since the flexible structural models tend to have large dimensions, a tractable model reduction process is necessary...
July 2017: Aerospace Science and Technology
https://www.readbyqxmd.com/read/29217548/nasa-sensor-to-study-space-junk-the-size-of-dust
#17
Ilima Loomis
No abstract text is available yet for this article.
December 8, 2017: Science
https://www.readbyqxmd.com/read/29211294/single-cell-analysis-using-hyperspectral-imaging-modalities
#18
Nishir Mehta, Shahensha Shaik, Ram Devireddy, Manas Gartia
Almost a decade ago, Hyperspectral Imaging (HSI) was employed by the NASA in satellite imaging applications such as remote sensing technology. This technology has since been extensively used in the exploration of minerals, agricultural purposes, water resources, and urban development needs. Due to recent advancements in optical re-construction and imaging, HSI can now be appliedtranslated down to micro- and nano-meter scales possibly allowing for exquisite control and analysis of single cell to complex biological systems...
December 6, 2017: Journal of Biomechanical Engineering
https://www.readbyqxmd.com/read/29206597/quantitative-proteomic-analysis-of-the-hippocampus-of-rats-with-gcr-induced-spatial-memory-impairment
#19
Sucharita M Dutta, Melissa M Hadley, Scott Peterman, Jessica S Jewell, Vania D Duncan, Richard A Britten
NASA is planning future missions to Mars, which will result in astronauts being exposed to ∼13 cGy/year of galactic cosmic radiation (GCR). Previous ground-based experiments have demonstrated that low (15 cGy) doses of 1 GeV/n 56Fe ions impair hippocampus-dependent spatial memory in rats. However, some irradiated rats maintain a spatial memory performance comparable to that seen in the sham-irradiated rats, suggesting that some of these animals are able to ameliorate the deleterious effects of the GCR, while others are not...
December 5, 2017: Radiation Research
https://www.readbyqxmd.com/read/29198969/validation-of-a-touchscreen-psychomotor-vigilance-task
#20
Lucia Arsintescu, Kenji H Kato, Patrick F Cravalho, Nathan H Feick, Leland S Stone, Erin E Flynn-Evans
OBJECTIVE: The purpose of this study was to compare a psychomotor vigilance task developed for use on touchscreen devices with the original PVT-192 in conditions of acute sleep loss and circadian desynchronization. BACKGROUND: The Psychomotor Vigilance Task (PVT) is considered the gold standard fatigue detection test and is used frequently in fatigue research. With the rapid development of new technologies it is essential to develop a PVT available on different platforms such as touchscreen devices...
November 30, 2017: Accident; Analysis and Prevention
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