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Hongda Tian, Wanqing Li, Philip O Ogunbona, Lei Wang
This paper proposes novel methods for detecting and separating smoke from a single image frame. Specifically, an image formation model is derived based on the atmospheric scattering models. The separation of a frame into quasi-smoke and quasi-background components is formulated as convex optimization that solves a sparse representation problem using dual dictionaries for the smoke and background components, respectively. A novel feature is constructed as a concatenation of the respective sparse coefficients for detection...
March 2018: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
Qian Liu, Suhua Zhang, Xiaogang Wang, Weifang Cao, Yading Jia
BACKGROUND: Intraoperative IOLs clouding of several kinds of hydrophilic acrylic intraocular lenses (IOLs) have been reported due to temperature changes. This phenomenon reported previously occurred in cold countries and during the winter months. However, no clinical case was reported about trifocal IOL opacification during operation. We report a case in which acute opacification of the optical region occurred simultaneously when AT LISA tri 839mp(Carl Zeiss) was implanted into the eye...
December 8, 2017: BMC Ophthalmology
Sara De Bruyn, Edwin Wouters, Koen Ponnet, Joris Van Damme, Guido Van Hal
BACKGROUND: Alcohol and drug misuse among college students has been studied extensively and has been clearly identified as a public health problem. Within more general populations alcohol misuse remains one of the leading causes of disease, disability and death worldwide. Conducting research on alcohol misuse requires valid and reliable instruments to measure its consequences. One scale that is often used is the consequences scale in the Core Alcohol and Drug Survey (CADS). However, psychometric studies on the CADS are rare and the ones that do exist report varying results...
2017: PloS One
Zhenyang Hui, Beiping Wu, Youjian Hu, Yao Yevenyo Ziggah
Obtaining high-precision filtering results from airborne lidar point clouds in complex environments has always been a hot topic. Mathematical morphology was widely used for filtering, owing to its simplicity and high efficiency. However, the morphology-based algorithms are deficient in preserving terrain details. In order to obtain a better filtering effect, this paper proposed an improved progressive morphological filter based on hierarchical radial basis function interpolation (PMHR) to refine the classical progressive morphological filter...
December 1, 2017: Applied Optics
Gin S Malhi, Tim Outhred
No abstract text is available yet for this article.
December 7, 2017: Bipolar Disorders
Cleiton B Eller, Fernanda de V Barros, Paulo R L Bittencourt, Lucy Rowland, Maurizio Mencuccini, Rafael S Oliveira
Faster growth in tropical trees is usually associated with higher mortality rates, but the mechanisms underlying this relationship are poorly understood. In this study, we investigate how tree growth patterns are linked with environmental conditions and hydraulic traits, by monitoring the cambial growth of nine tropical cloud forest tree species coupled with numerical simulations using a optimization model. We find that fast-growing trees have lower xylem safety margins than slow-growing trees and this pattern is not necessarily linked to differences in stomatal behaviour or environmental conditions when growth occurs...
December 6, 2017: Plant, Cell & Environment
Fernando Godinho Zampieri, Márcio Soares, Lunna Perdigão Borges, Jorge Ibrain Figueira Salluh, Otávio Tavares Ranzani
OBJECTIVE: To describe the Epimed Monitor Database®, a Brazilian intensive care unit quality improvement database. METHODS: We described the Epimed Monitor® Database, including its structure and core data. We presented aggregated informative data from intensive care unit admissions from 2010 to 2016 using descriptive statistics. We also described the expansion and growth of the database along with the geographical distribution of participating units in Brazil...
November 30, 2017: Revista Brasileira de Terapia Intensiva
Loubna Shamseddine, Zeina Majzoub
AIM: The aim of this study was to compare the translucency parameter (TP) of ultratranslucent multilayered (UTML) zirconia according to thickness and layer level. MATERIALS AND METHODS: Rectangles of UTML zirconia with four layers [dentin layer (DEL), first transitional layer (FTL), second transitional layer (STL), and enamel layer (ENL)] and four different thicknesses (0.4, 0.6, 0.8, and 1 mm) were milled from blanks. Digital images were taken in a dark studio against white and black backgrounds under simulated daylight illumination and international commission on illumination (CIE) Lab* color values recorded using Photoshop Creative Cloud software...
December 1, 2017: Journal of Contemporary Dental Practice
Karen Goldschmidt
No abstract text is available yet for this article.
December 3, 2017: Journal of Pediatric Nursing
Erling Mellerup, Martin Balslev Jørgensen, Henrik Dam, Gert Lykke Møller
OBJECTIVES: Combinations of genetic variants are the basis for polygenic disorders. We examined combinations of SNP genotypes taken from the 446 729 SNPs in The Wellcome Trust Case Control Study of bipolar patients. METHODS: Parallel computing by graphics processing units, cloud computing, and data mining tools were used to scan The Wellcome Trust data set for combinations. RESULTS: Two clusters of combinations were significantly associated with bipolar disorder...
December 6, 2017: Acta Neuropsychiatrica
Tsung-Hung Lin, Chen-Kun Tsung, Tian-Fu Lee, Zeng-Bo Wang
The security is a critical issue for business purposes. For example, the cloud meeting must consider strong security to maintain the communication privacy. Considering the scenario with cloud meeting, we apply extended chaotic map to present passwordless group authentication key agreement, termed as Passwordless Group Authentication Key Agreement (PL-GAKA). PL-GAKA improves the computation efficiency for the simple group password-based authenticated key agreement (SGPAKE) proposed by Lee et al. in terms of computing the session key...
December 3, 2017: Sensors
Adilson Berveglieri, Antonio M G Tommaselli, Xinlian Liang, Eija Honkavaara
This paper presents a practical application of a technique that uses a vertical optical flow with a fisheye camera to generate dense point clouds from a single planimetric station. Accurate data can be extracted to enable the measurement of tree trunks or branches. The images that are collected with this technique can be oriented in photogrammetric software (using fisheye models) and used to generate dense point clouds, provided that some constraints on the camera positions are adopted. A set of images was captured in a forest plot in the experiments...
December 2, 2017: Sensors
Guillermo Iván Guerrero-García, Enrique González-Tovar, Martín Chávez-Páez, Jacek Kłos, Stanisław Lamperski
The spatial extension of the ionic cloud neutralizing a charged colloid or an electrode is usually characterized by the Debye length associated with the supporting charged fluid in the bulk. This spatial length arises naturally in the linear Poisson-Boltzmann theory of point charges, which is the cornerstone of the widely used Derjaguin-Landau-Verwey-Overbeek formalism describing the colloidal stability of electrified macroparticles. By definition, the Debye length is independent of important physical features of charged solutions such as the colloidal charge, electrostatic ion correlations, ionic excluded volume effects, or specific short-range interactions, just to mention a few...
December 5, 2017: Physical Chemistry Chemical Physics: PCCP
Kai Guan, Minggang Shao, Shuicai Wu
This paper proposed a remote health monitoring system for the elderly based on smart home gateway. The proposed system consists of three parts: the smart clothing, the smart home gateway, and the health care server. The smart clothing collects the elderly's electrocardiogram (ECG) and motion signals. The home gateway is used for data transmission. The health care server provides services of data storage and user information management; it is constructed on the Windows-Apache-MySQL-PHP (WAMP) platform and is tested on the Ali Cloud platform...
2017: Journal of Healthcare Engineering
Helen Loeb, Jinyong Kim, Kristy Arbogast, Jonny Kuo, Sjaan Koppel, Suzanne Cross, Judith Charlton
INTRODUCTION: Child occupant safety in motor-vehicle crashes is evaluated using Anthropomorphic Test Devices (ATD) seated in optimal positions. However, child occupants often assume suboptimal positions during real-world driving trips. Head impact to the seat back has been identified as one important injury causation scenario for seat belt restrained, head-injured children (Bohman et al., 2011). There is therefore a need to understand the interaction of children with the Child Restraint System to optimize protection...
December 2017: Journal of Safety Research
Vahid Jalili, Matteo Matteucci, Marco Masseroli, Stefano Ceri
BACKGROUND: With the wide-spreading of public repositories of NGS processed data, the availability of user-friendly and effective tools for data exploration, analysis and visualization is becoming very relevant. These tools enable interactive analytics, an exploratory approach for the seamless "sense-making" of data through on-the-fly integration of analysis and visualization phases, suggested not only for evaluating processing results, but also for designing and adapting NGS data analysis pipelines...
December 4, 2017: BMC Bioinformatics
Erin M Riley, Holly Z Hattaway, P Arthur Felse
Background: Electronic lab notebooks (ELNs) are better equipped than paper lab notebooks (PLNs) to handle present-day life science and engineering experiments that generate large data sets and require high levels of data integrity. But limited training and a lack of workforce with ELN knowledge have restricted the use of ELN in academic and industry research laboratories which still rely on cumbersome PLNs for recordkeeping. We used LabArchives, a cloud-based ELN in our bioprocess engineering lab course to train students in electronic record keeping, good documentation practices (GDPs), and data integrity...
2017: Journal of Biological Engineering
Clara E Seaman, Michael R Shahan, Timothy W Beck, Steven E Mischler
Float coal dust, generated by mining operations, is distributed throughout mine airways by ventilating air designed to purge gases and respirable dust. Float coal dust poses an explosion hazard in the event of a methane ignition. Current regulation requires the application of inert rock dust in areas subjected to float coal dust in order to mitigate the hazard. An alternate method using water sprays, which have been effective in controlling respirable dust hazards, has been proposed as a way to control float coal dust generated on longwall faces...
December 4, 2017: Journal of Occupational and Environmental Hygiene
Lijie Zhang, Haiyan Pei, Shuaiqi Chen, Liqun Jiang, Qingjie Hou, Zhigang Yang, Ze Yu
Salinity stress has been verified to be a successful approach to enhance lipid production in high-starch marine algae, and salinity-induced carbon flow switching has been proposed as an algal response specific to brackish water. With the aim of testing this assumption, Chlorella sorokiniana SDEC-18, a low-starch freshwater alga, was grown in BG11 medium with NaCl addition at various concentrations (0, 2, 5, 10, 20, and 30 g/L). The results showed that salinity stress promoted carbon redistribution and starch conversion to lipid...
November 23, 2017: Bioresource Technology
Sybil G Gotsch, Kenneth Davidson, Jessica G Murray, Vanessa J Duarte, Danel Draguljić
PREMISE OF THE STUDY: Tropical Montane Cloud Forests (TMCFs) are important ecosystems to study and preserve because of their high biodiversity and critical roles in local and regional ecosystem processes. TMCFs may be particularly affected by changes in climate because of the narrow bands of microclimate they occupy and the vulnerability of TMCF species to projected increases in cloud base heights and drought. A comprehensive understanding of the structure and function of TMCFs is lacking and difficult to attain because of variation in topography within and across TMCF sites...
December 1, 2017: American Journal of Botany
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