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https://www.readbyqxmd.com/read/28641252/an-embedded-marked-point-process-framework-for-three-level-object-population-analysis
#1
Csaba Benedek
In this paper we introduce a probabilistic approach for extracting complex hierarchical object structures from digital images used by various vision applications. The proposed framework extends conventional Marked Point Process (MPP) models by (i) admitting object-subobject ensembles in parent-child relationships and (ii) allowing corresponding objects to form coherent object groups, by a Bayesian segmentation of the population. Different from earlier, highly domain specific attempts on MPP generalization, the proposed model is defined at an abstract level, providing clear interfaces for applications in various domains...
June 15, 2017: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
https://www.readbyqxmd.com/read/28630481/near-surface-coherent-structures-explored-by-large-eddy-simulation-of-entire-tropical-cyclones
#2
Junshi Ito, Tsutao Oizumi, Hiroshi Niino
Taking advantage of the huge computational power of a massive parallel supercomputer (K-supercomputer), this study conducts large eddy simulations of entire tropical cyclones by employing a numerical weather prediction model, and explores near-surface coherent structures. The maximum of the near-surface wind changes little from that simulated based on coarse-resolution runs. Three kinds of coherent structures appeared inside the boundary layer. The first is a Type-A roll, which is caused by an inflection-point instability of the radial flow and prevails outside the radius of maximum wind...
June 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28616674/health-related-quality-of-life-of-a-very-special-population-monks-of-holy-mountain-athos-greece
#3
K Merakou, E Kyklou, E Antoniadou, D Theodoridis, E Doufexis, A Barbouni
PURPOSE: The investigation of Health-Related Quality of Life (HRQOL) of Orthodox Christian monks who live at the Holy Mount Athos in Greece, and its correlation with demographic characteristics and Sense of Coherence (SOC-13). METHODS: A cross-sectional study was designed. The seven monasteries and five scetes with the largest number of monk population were invited to participate. Two monasteries and 1 scete gave their permission for the study. The final monks sample was formed by 166 monks from 215 who participated to the study...
June 14, 2017: Quality of Life Research
https://www.readbyqxmd.com/read/28604641/local-competition-based-superpixel-segmentation-algorithm-in-remote-sensing
#4
Jiayin Liu, Zhenmin Tang, Ying Cui, Guoxing Wu
Remote sensing technologies have been widely applied in urban environments' monitoring, synthesis and modeling. Incorporating spatial information in perceptually coherent regions, superpixel-based approaches can effectively eliminate the "salt and pepper" phenomenon which is common in pixel-wise approaches. Compared with fixed-size windows, superpixels have adaptive sizes and shapes for different spatial structures. Moreover, superpixel-based algorithms can significantly improve computational efficiency owing to the greatly reduced number of image primitives...
June 12, 2017: Sensors
https://www.readbyqxmd.com/read/28604002/coherent-transport-in-a-linear-triple-quantum-dot-made-from-a-pure-phase-inas-nanowire
#5
Ji-Yin Wang, Shaoyun Huang, Guang-Yao Huang, Dong Pan, Jianhua Zhao, H Q Xu
A highly tunable linear triple quantum dot (TQD) device is realized in a single-crystalline pure-phase InAs nanowire using a local finger gate technique. The electrical measurements show that the charge stability diagram of the TQD can be represented by three kinds of current lines of different slopes and a simulation performed based on a capacitance matrix model confirms the experiment. We show that each current line observable in the charge stability diagram is associated with a case where a QD is on resonance with the Fermi level of the source and drain reservoirs...
June 16, 2017: Nano Letters
https://www.readbyqxmd.com/read/28596634/a-three-step-reconstruction-method-for-fluorescence-molecular-tomography-based-on-compressive-sensing
#6
Yansong Zhu, Abhinav K Jha, Jakob K Dreyer, Hanh N D Le, Jin U Kang, Per E Roland, Dean F Wong, Arman Rahmim
Fluorescence molecular tomography (FMT) is a promising tool for real time in vivo quantification of neurotransmission (NT) as we pursue in our BRAIN initiative effort. However, the acquired image data are noisy and the reconstruction problem is ill-posed. Further, while spatial sparsity of the NT effects could be exploited, traditional compressive-sensing methods cannot be directly applied as the system matrix in FMT is highly coherent. To overcome these issues, we propose and assess a three-step reconstruction method...
January 28, 2017: Proceedings of SPIE
https://www.readbyqxmd.com/read/28595651/psychometric-limitations-of-the-13-item-sense-of-coherence-scale-assessed-by-rasch-analysis
#7
Anners Lerdal, Randi Opheim, Caryl L Gay, Bjørn Moum, May Solveig Fagermoen, Anders Kottorp
BACKGROUND: A person's sense of coherence (SOC) reflects their perception that the world is meaningful and predictable, and impacts their ability to deal with stressors in a health-promoting manner. A valid, reliable, and sensitive measure of SOC is needed to advance health promotion research based on this concept. The 13-item Sense of Coherence Scale (SOC-13) is widely used, but we reported in a previous evaluation its psychometric limitations when used with adults with morbid obesity...
June 8, 2017: BMC Psychology
https://www.readbyqxmd.com/read/28587255/a-forward-gps-multipath-simulator-based-on-the-vegetation-radiative-transfer-equation-model
#8
Xuerui Wu, Shuanggen Jin, Junming Xia
Global Navigation Satellite Systems (GNSS) have been widely used in navigation, positioning and timing. Nowadays, the multipath errors may be re-utilized for the remote sensing of geophysical parameters (soil moisture, vegetation and snow depth), i.e., GPS-Multipath Reflectometry (GPS-MR). However, bistatic scattering properties and the relation between GPS observables and geophysical parameters are not clear, e.g., vegetation. In this paper, a new element on bistatic scattering properties of vegetation is incorporated into the traditional GPS-MR model...
June 5, 2017: Sensors
https://www.readbyqxmd.com/read/28587240/adaptive-temporal-matched-filtering-for-noise-suppression-in-fiber-optic-distributed-acoustic-sensing
#9
İbrahim Ölçer, Ahmet Öncü
Distributed vibration sensing based on phase-sensitive optical time domain reflectometry ( ϕ -OTDR) is being widely used in several applications. However, one of the main challenges in coherent detection-based ϕ -OTDR systems is the fading noise, which impacts the detection performance. In addition, typical signal averaging and differentiating techniques are not suitable for detecting high frequency events. This paper presents a new approach for reducing the effect of fading noise in fiber optic distributed acoustic vibration sensing systems without any impact on the frequency response of the detection system...
June 5, 2017: Sensors
https://www.readbyqxmd.com/read/28584276/persistent-lhpa-activation-in-german-individuals-raised-in-an-overprotective-parental-behavior
#10
E Ullmann, J Licinio, A Barthel, K Petrowski, T Stalder, S R Bornstein, C Kirschbaum
Parental upbringing may affect their offspring's mental state across the entire lifespan. Overprotective parental child-rearing style may increase the disease burden in the offspring. Furthermore, this child-rearing style may also play a pathogenetic role by transmitting trauma- and stressor-related disorders (TSRD) across generations. Studies with animals have demonstrated that the mother's immediate and expansive protection of the newborn decreases the limbic-hypothalamic-pituitary-adrenal (LHPA) axis activity in the offspring...
June 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28562494/factors-affecting-the-development-and-sustainability-of-communities-of-practice-among-primary-care-physicians-in-hong-kong
#11
Man Kay Poon, Tai Pong Lam
INTRODUCTION: Primary care physicians (PCPs) maintain high standards of medical care by partaking in continuous learning. The learning model of communities of practice (COPs) is increasingly being used in the field of health care. This study explores the establishment and maintenance of COPs among PCPs in Hong Kong. METHODS: Sequential, semi-structured individual interview and focus group interview were conducted to explore the purposes for partaking in continuous learning, as well as barriers and facilitators for attendance among private nonspecialist PCPs in Hong Kong...
April 2017: Journal of Continuing Education in the Health Professions
https://www.readbyqxmd.com/read/28561901/psychosocial-factors-and-traumatic-dental-injuries-among-adolescents
#12
Konstantinos Baxevanos, Vasiliki Topitsoglou, Georgios Menexes, Sotirios Kalfas
OBJECTIVES: To examine the association of traumatic dental injuries (TDI) and psychosocial factors in adolescents and to identify psychological profiles associated with TDI. METHODS: A cross-sectional study was conducted involving 531 students aged 13-16 years. Data were collected through oral examination and a structured interview with the adolescents, in conjunction with a questionnaire answered by their mothers. Associations between TDI and independent variables were analysed using a model-based approach, while an exploratory data analysis was applied to identify homogenous clusters of adolescents in relation to their sense of coherence (SoC), perception of parental support and their mothers' SoC...
May 31, 2017: Community Dentistry and Oral Epidemiology
https://www.readbyqxmd.com/read/28561556/association-between-sense-of-coherence-and-oral-health-related-quality-of-life-among-toddlers
#13
I B Fernandes, D C Costa, V S Coelho, A C Sá-Pinto, J Ramos-Jorge, M L Ramos-Jorge
Objective: To assess the relationship between sense of coherence (SOC) and oral health-related quality of life (OHRQoL) among children aged one to three years. Participants: A cross-sectional study was conducted with 276 mother-child pairs randomly selected from the city of Diamantina, Brazil. Method: Information was obtained on socio-demographic factors. The short version of Antonovsky's sense of coherence scale (SOC 13) and the Early Childhood Oral Health Impact Scale (ECOHIS) were administered...
March 2017: Community Dental Health
https://www.readbyqxmd.com/read/28551459/child-physical-abuse-high-school-students-mental-health-and-parental-relations-depending-on-who-perpetrated-the-abuse
#14
Nilsson, Nordås, Priebe, Svedin
The aim of this study was to contribute to the research of child physical abuse (CPA) by examining if there were any differences in high school students' mental health (in this study symptoms of depression and anxiety, self-esteem and sense of coherence) and/or, in how they perceive their parents, depending on whether or not they had been subjected to CPA during childhood. In addition, if high school students reported different mental health and/or, relationships with their parents, depending on if their mother, father or both parents were the perpetrators of CPA...
May 25, 2017: Child Abuse & Neglect
https://www.readbyqxmd.com/read/28548085/ultrafast-coherence-transfer-in-dna-templated-silver-nanoclusters
#15
Erling Thyrhaug, Sidsel Ammitzbøll Bogh, Miguel R Carro-Temboury, Charlotte Stahl Madsen, Tom Vosch, Donatas Zigmantas
DNA-templated silver nanoclusters of a few tens of atoms or less have come into prominence over the last several years due to very strong absorption and efficient emission. Applications in microscopy and sensing have already been realized, however little is known about the excited-state structure and dynamics in these clusters. Here we report on a multidimensional spectroscopy investigation of the energy-level structure and the early-time relaxation cascade, which eventually results in the population of an emitting state...
May 26, 2017: Nature Communications
https://www.readbyqxmd.com/read/28546208/submillihertz-magnetic-spectroscopy-performed-with-a-nanoscale-quantum-sensor
#16
Simon Schmitt, Tuvia Gefen, Felix M Stürner, Thomas Unden, Gerhard Wolff, Christoph Müller, Jochen Scheuer, Boris Naydenov, Matthew Markham, Sebastien Pezzagna, Jan Meijer, Ilai Schwarz, Martin Plenio, Alex Retzker, Liam P McGuinness, Fedor Jelezko
Precise timekeeping is critical to metrology, forming the basis by which standards of time, length, and fundamental constants are determined. Stable clocks are particularly valuable in spectroscopy because they define the ultimate frequency precision that can be reached. In quantum metrology, the qubit coherence time defines the clock stability, from which the spectral linewidth and frequency precision are determined. We demonstrate a quantum sensing protocol in which the spectral precision goes beyond the sensor coherence time and is limited by the stability of a classical clock...
May 26, 2017: Science
https://www.readbyqxmd.com/read/28533523/characterization-of-two-distant-double-slits-by-chaotic-light-second-order-interference
#17
Milena D'Angelo, Aldo Mazzilli, Francesco V Pepe, Augusto Garuccio, Vincenzo Tamma
We present the experimental characterization of two distant double-slit masks illuminated by chaotic light, in the absence of first-order imaging and interference. The scheme exploits second-order interference of light propagating through two indistinguishable pairs of disjoint optical paths passing through the masks of interest. The proposed technique leads to a deeper understanding of biphoton interference and coherence, and opens the way to the development of novel schemes for retrieving information on the relative position and the spatial structure of distant objects, which is of interest in remote sensing, biomedical imaging, as well as monitoring of laser ablation, when first-order imaging and interference are not feasible...
May 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28530015/the-relationship-between-internalized-stigma-and-quality-of-life-among-people-with-mental-illness-are-self-esteem-and-sense-of-coherence-sequential-mediators
#18
Piotr Świtaj, Paweł Grygiel, Anna Chrostek, Izabela Nowak, Jacek Wciórka, Marta Anczewska
PURPOSE: To elucidate the mechanism through which internalized stigma reduces the quality of life (QoL) of people with mental illness by exploring the mediating roles of self-esteem and sense of coherence (SOC). METHODS: A cross-sectional analysis of 229 patients diagnosed with schizophrenia or affective disorders was undertaken to test a sequential mediation model assuming that more severe internalized stigma is related to lower self-esteem, which is associated with weaker SOC, which in turn relates to worse QoL...
May 22, 2017: Quality of Life Research
https://www.readbyqxmd.com/read/28512757/sense-of-coherence-and-oral-health-in-older-adults-in-southern%C3%A2-brazil
#19
Anna Paula da Rosa Possebon, Ana Paula Pinto Martins, Júlia Freire Danigno, Caroline de Oliveira Langlois, Alexandre Emidio Ribeiro Silva
OBJECTIVE: The aim of this study was to evaluate the association between sense of coherence and oral health among older adults treated at family health units in southern Brazil. MATERIAL AND METHODS: The sample was composed of 164 individuals aged 60 years old or older. Socio-demographic and oral health variables were collected using a standardised questionnaire. Sense of coherence (SOC) was measured with the questionnaire proposed by Antonovsky containing 29 closed-ended questions...
May 17, 2017: Gerodontology
https://www.readbyqxmd.com/read/28507497/sense-of-coherence-as-a-protective-factor-in-chronic-urticaria
#20
Alicja Ograczyk, Joanna Miniszewska, Anna Pietrzak, Anna Zalewska-Janowska
INTRODUCTION: Chronic urticaria (CU) seems to be perceived as a psychodermatological disorder. Different psychological factors play an important role in CU triggering and course. One of them is a sense of coherence (SOC), which is believed to be a protective factor against anxiety and depression. AIM: To investigate quality of life (QoL) in CU patients and to compare selected psychological parameters (anxiety, depression and sense of coherence) between CU individuals and the control group...
April 2017: Postȩpy Dermatologii i Alergologii
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