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Sense of coherence

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https://www.readbyqxmd.com/read/28230441/exploring-salutogenesis-as-a-concept-of-health-and-wellbeing-in-nurses-who-thrive-professionally
#1
Eleanor Stock
AIM: To determine whether salutogenesis, a concept of health and wellbeing, can be identified in nurses who self-describe as thriving professionally. BACKGROUND: Nurse burnout can potentially impact clinical performance, patient safety, and increase the turnover of nurses, which all contribute to additional healthcare costs. The ability to not only avoid burnout, but to thrive in stressful environments is an important factor worth exploring. The salutogenic concept is related to this...
February 23, 2017: British Journal of Nursing: BJN
https://www.readbyqxmd.com/read/28226529/shearlet-transform-a-good-candidate-for-compressed-sensing-in-optical-coherence-tomography
#2
Lesley-Ann Duflot, Alexandre Krupa, Brahim Tamadazte, Nicolas Andreff, Lesley-Ann Duflot, Alexandre Krupa, Brahim Tamadazte, Nicolas Andreff, Alexandre Krupa, Lesley-Ann Duflot, Brahim Tamadazte, Nicolas Andreff
This paper deals with the development of a fast and smart acquisition technique of Optical Coherence Tomography (OCT) data that has the capability to reconstruct missing data of OCT image. The main objective is to reduce the acquisition time (i.e., increase the frame rate) of an OCT-scan system by choosing a trajectory that covers entirely the image but that does not take all the measurements. The reconstruction of the missing data is achieved by applying an updated Fast Iterative Soft-Thresholding Algorithm (FISTA) on a sparse representation of the image...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28223789/the-determinants-of-coping-with-pain-in-chronically-ill-geriatric-patients-the-role-of-a-sense-of-coherence
#3
Anna Andruszkiewicz, Małgorzata Anna Basińska, Mirosława Felsmann, Mariola Banaszkiewicz, Alicja Marzec, Kornelia Kędziora-Kornatowska
BACKGROUND: Given the rising population of the elderly in modern societies, the concern for their good functioning poses a challenge for the 21st century medicine and social services. Senior citizens are at an increased risk of developing chronic conditions, which in turn increase discomfort associated with physiological processes of aging. Sensations of pain have a particular influence on the mentioned discomfort, and pain is prevalent among older people. Therefore, from the perspective of an elderly person and senior care, it is crucial to identify determinants of effective coping with chronic pain...
2017: Clinical Interventions in Aging
https://www.readbyqxmd.com/read/28218652/steady-%C3%AE-ray-effects-on-the-performance-of-ppp-botda-and-tw-cotdr-fiber-sensing
#4
Isabelle Planes, Sylvain Girard, Aziz Boukenter, Emmanuel Marin, Sylvie Delepine-Lesoille, Claude Marcandella, Youcef Ouerdane
We investigated the evolution of the performances of Pulse Pre Pump-Brillouin Time Domain Analysis (PPP-BOTDA) and Tunable Wavelength Coherent Optical Time Domain Reflectometry (TW-COTDR) fiber-based temperature and strain sensors when the sensing optical fiber is exposed to two γ-ray irradiation conditions: (i) at room temperature and a dose rate of 370 Gy(SiO2)/h up to a total ionizing dose (TID) of 56 kGy; (ii) at room temperature and a dose rate of 25 kGy(SiO2)/h up to a TID of 10 MGy. Two main different classes of single-mode optical fibers have been tested in situ, radiation-tolerant ones: fluorine-doped or nitrogen-doped core fibers, as well as Telecom-grade germanosilicate ones...
February 17, 2017: Sensors
https://www.readbyqxmd.com/read/28197858/mapping-biological-transmission-an-empirical-dynamical-and-evolutionary-approach
#5
Francesca Merlin, Livio Riboli-Sasco
The current debate over extending inheritance and its evolutionary impact has focused on adding new categories of non-genetic factors to the classical transmission of DNA, and on trying to redefine inheritance. Transmitted factors have been mainly characterized by their directions of transmission (vertical, horizontal, or both) and the way they store variations. In this paper, we leave aside the issue of defining inheritance. We rather try to build an evolutionary conceptual framework that allows for tracing most, if not all forms of transmission and makes sense of their different tempos and modes...
February 14, 2017: Acta Biotheoretica
https://www.readbyqxmd.com/read/28196889/quantum-interpolation-for-high-resolution-sensing
#6
Ashok Ajoy, Yi-Xiang Liu, Kasturi Saha, Luca Marseglia, Jean-Christophe Jaskula, Ulf Bissbort, Paola Cappellaro
Recent advances in engineering and control of nanoscale quantum sensors have opened new paradigms in precision metrology. Unfortunately, hardware restrictions often limit the sensor performance. In nanoscale magnetic resonance probes, for instance, finite sampling times greatly limit the achievable sensitivity and spectral resolution. Here we introduce a technique for coherent quantum interpolation that can overcome these problems. Using a quantum sensor associated with the nitrogen vacancy center in diamond, we experimentally demonstrate that quantum interpolation can achieve spectroscopy of classical magnetic fields and individual quantum spins with orders of magnitude finer frequency resolution than conventionally possible...
February 14, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28192946/gold-nanoprobe-enabled-three-dimensional-ozone-imaging-by-optical-coherence-tomography
#7
Xueqin Jiang, Peijun Tang, Panpan Gao, Yu Shrike Zhang, Changqing Yi, Jianhua Zhou
Ozone (O3) would be harmful to human skin for its strong oxidizing property, especially when stratum corneum or corneal epithelium is wounded. Imaging the penetration and distribution of ozone at depth is beneficial for studying the influence of ozone on skin or eyes. Here, we introduced a facile method for three-dimensional (3D) imaging of the penetration of O3 into the anterior chamber of an isolated crucian carp eye by using optical coherence tomography (OCT) combined with gold triangular nanoprisms (GTNPs) as the contrast agent and molecular probe...
February 2, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28186814/optimum-mixed-state-discrimination-for-noisy-entanglement-enhanced-sensing
#8
Quntao Zhuang, Zheshen Zhang, Jeffrey H Shapiro
Quantum metrology utilizes nonclassical resources, such as entanglement or squeezed light, to realize sensors whose performance exceeds that afforded by classical-state systems. Environmental loss and noise, however, easily destroy nonclassical resources and, thus, nullify the performance advantages of most quantum-enhanced sensors. Quantum illumination (QI) is different. It is a robust entanglement-enhanced sensing scheme whose 6 dB performance advantage over a coherent-state sensor of the same average transmitted photon number survives the initial entanglement's eradication by loss and noise...
January 27, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28176835/microscopic-description-for-the-emergence-of-collective-dissipation-in-extended-quantum-systems
#9
Fernando Galve, Antonio Mandarino, Matteo G A Paris, Claudia Benedetti, Roberta Zambrini
Practical implementations of quantum technology are limited by unavoidable effects of decoherence and dissipation. With achieved experimental control for individual atoms and photons, more complex platforms composed by several units can be assembled enabling distinctive forms of dissipation and decoherence, in independent heat baths or collectively into a common bath, with dramatic consequences for the preservation of quantum coherence. The cross-over between these two regimes has been widely attributed in the literature to the system units being farther apart than the bath's correlation length...
February 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28168738/golden-ratio-rotated-stack-of-stars-acquisition-for-improved-volumetric-mri
#10
Ziwu Zhou, Fei Han, Lirong Yan, Danny J J Wang, Peng Hu
PURPOSE: To develop and evaluate an improved stack-of-stars radial sampling strategy for reducing streaking artifacts. METHODS: The conventional stack-of-stars sampling strategy collects the same radial angle for every partition (slice) encoding. In an undersampled acquisition, such an aligned acquisition generates coherent aliasing patterns and introduces strong streaking artifacts. We show that by rotating the radial spokes in a golden-angle manner along the partition-encoding direction, the aliasing pattern is modified, resulting in improved image quality for gridding and more advanced reconstruction methods...
February 6, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28159135/sense-of-coherence-in-pregnant-and-new-mothers-a-longitudinal-study-of-a-national-cohort-of-swedish-speaking-women
#11
Ingegerd Hildingsson
BACKGROUND: Previous research shows inconsistent results about the stability of SOC during the childbearing period, and few studies have focused on longitudinal measures. There are contradictory results regarding the association between SOC and birth outcome. The link between levels of SOC and parental stress needs to be further explored. AIM: The aim of this study was to investigate changes in SOC from early pregnancy to one year after birth and associations with background characteristics, birth outcome and parental stress...
March 2017: Sexual & Reproductive Healthcare: Official Journal of the Swedish Association of Midwives
https://www.readbyqxmd.com/read/28157910/compressive-holography-algorithm-for-the-objects-composed-of-point-sources
#12
Jing Liu, Guoxian Zhang, Kai Zhao, Xiaoyu Jiang
A compressive holography algorithm is proposed for the objects composed of point sources in this work. The proposed algorithm is based on Gabor holography, an amazingly simple and effective encoder for compressed sensing. In the proposed algorithm, the three-dimensional sampling space is uniformly divided into a number of grids since the virtual object may appear anywhere in the sampling space. All the grids are mapped into an indication vector, which is sparse in nature considering that the number of grids occupied by the virtual object is far less than that of the whole sampling space...
January 20, 2017: Applied Optics
https://www.readbyqxmd.com/read/28157877/compressive-imaging-via-a-rotating-coded-aperture
#13
Michael L Don, Chen Fu, Gonzalo R Arce
Compressive sensing has been used to increase the resolution of sensor arrays, allowing high-resolution images to be obtained from low-resolution or even single pixel sensors. This paper introduces a rotating coded aperture for compressive imaging that has advantages over other sensing strategies. The design of the code geometry is motivated by constraints imposed by the imager's rotation. The block-unblock code pattern is optimized by minimizing the mutual coherence of the sensing matrix. Simulation results are presented, using the final code design to successfully recover high-resolution images from a very small sensor array...
January 20, 2017: Applied Optics
https://www.readbyqxmd.com/read/28156024/a-systematic-review-of-adolescents-sense-of-coherence-and-health
#14
REVIEW
Helena Länsimies, Anna-Maija Pietilä, Soili Hietasola-Husu, Mari Kangasniemi
The aim of this systematic review was to describe the association between adolescent sense of coherence (SOC) and health and identify the future direction for research in this area. Systematic searches were conducted (2007-2014) in the PubMed, CINAHL, PsycINFO and Cochrane electronic databases and carried out manual searches in three scientific journals. A total of 827 original papers were found and 23 were selected. Based on the results, adolescents' sense of coherence (SOC) was related to health in terms of the adolescents' quality of life, health behaviour, mental health and family relationships by using 31 different health-related instruments...
February 3, 2017: Scandinavian Journal of Caring Sciences
https://www.readbyqxmd.com/read/28150737/a-novel-semiconductor-based-fully-incoherent-amplified-spontaneous-emission-light-source-for-ghost-imaging
#15
Sébastien Hartmann, Wolfgang Elsäßer
Initially, ghost imaging (GI) was demonstrated with entangled light from parametric down conversion. Later, classical light sources were introduced with the development of thermal light GI concepts. State-of-the-art classical GI light sources rely either on complex combinations of coherent light with spatially randomizing optical elements or on incoherent lamps with monochromating optics, however suffering strong losses of efficiency and directionality. Here, a broad-area superluminescent diode is proposed as a new light source for classical ghost imaging...
February 2, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28147626/a-sparse-equivalent-source-method-for-near-field-acoustic-holography
#16
Efren Fernandez-Grande, Angeliki Xenaki, Peter Gerstoft
This study examines a near-field acoustic holography method consisting of a sparse formulation of the equivalent source method, based on the compressive sensing (CS) framework. The method, denoted Compressive-Equivalent Source Method (C-ESM), encourages spatially sparse solutions (based on the superposition of few waves) that are accurate when the acoustic sources are spatially localized. The importance of obtaining a non-redundant representation, i.e., a sensing matrix with low column coherence, and the inherent ill-conditioning of near-field reconstruction problems is addressed...
January 2017: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/28147570/adaptive-and-compressive-matched-field-processing
#17
Kay L Gemba, William S Hodgkiss, Peter Gerstoft
Matched field processing is a generalized beamforming method that matches received array data to a dictionary of replica vectors in order to locate one or more sources. Its solution set is sparse since there are considerably fewer sources than replicas. Using compressive sensing (CS) implemented using basis pursuit, the matched field problem is reformulated as an underdetermined, convex optimization problem. CS estimates the unknown source amplitudes using the replica dictionary to best explain the data, subject to a row-sparsity constraint...
January 2017: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/28145700/synthetic-approach-to-determine-the-effect-of-nuclear-spin-distance-on-electronic-spin-decoherence
#18
Michael J Graham, Chung-Jui Yu, Matthew D Krzyaniak, Michael R Wasielewski, Danna E Freedman
Nuclear-electronic interactions are a fundamental phenomenon which impacts fields from magnetic resonance imaging to quantum information processing (QIP). The realization of QIP would transform diverse areas of research including accurate simulation of quantum dynamics and cryptography. One promising candidate for the smallest unit of QIP, a qubit, is electronic spin. Electronic spins in molecules offer significant advantages with regard to QIP, and for the emerging field of quantum sensing. Yet relative to other qubit candidates, they possess shorter superposition lifetimes, known as coherence times or T2, due to interactions with nuclear spins in the local environment...
February 15, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28143509/a-protective-personal-factor-against-disability-and-dependence-in-the-elderly-an-ordinal-regression-analysis-with-nine-geographically-defined-samples-from-spain
#19
Javier Virues-Ortega, Saturio Vega, Manuel Seijo-Martinez, Pedro Saz, Fernanda Rodriguez, Angel Rodriguez-Laso, Susana Perez de Las Heras, Raimundo Mateos, Pablo Martinez-Martin, Ignacio Mahillo-Fernandez, Josep Garre-Olmo, Jordi Gascon, Francisco Jose Garcia-Garcia, Manuel Fernandez-Martinez, Felix Bermejo-Pareja, Alberto Bergareche, Julian Benito-Leon, Jesus de Pedro-Cuesta
BACKGROUND: Sense of Coherence (SOC) is defined as a tendency to perceive life experiences as comprehensible, manageable and meaningful. The construct is split in three major domains: Comprehensibility, Manageability, and Meaningfulness. SOC has been associated with successful coping strategies in the face of illness and traumatic events and is a predictor of self-reported and objective health in a variety of contexts. In the present study we aim to evaluate the association of SOC with disability and dependence in Spanish elders...
January 31, 2017: BMC Geriatrics
https://www.readbyqxmd.com/read/28134819/ultrafast-fiber-bragg-grating-interrogation-for-sensing-in-detonation-and-shock-wave-experiments
#20
George Rodriguez, Steve M Gilbertson
Chirped fiber Bragg grating (CFBG) sensors coupled to high speed interrogation systems are described as robust diagnostic approaches to monitoring shock wave and detonation front propagation tracking events for use in high energy density shock physics applications. Taking advantage of the linear distributed spatial encoding of the spectral band in single-mode CFBGs, embedded fiber systems and associated photonic interrogation methodologies are shown as an effective approach to sensing shock and detonation-driven loading processes along the CFBG length...
January 27, 2017: Sensors
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