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https://www.readbyqxmd.com/read/28437993/integrated-optical-force-sensors-using-focusing-photonic-crystal-arrays
#1
Jingkun Guo, Richard A Norte, S Gröblacher
Mechanical oscillators are at the heart of many sensor applications. Recently several groups have developed oscillators that are probed optically, fabricated from high-stress silicon nitride films. They exhibit outstanding force sensitivities of a few aN/Hz<sup>1/2</sup> and can also be made highly reflective, for efficient detection. The optical read-out usually requires complex experimental setups, including positioning stages and bulky cavities, making them impractical for real applications. In this paper we propose a novel way of building fully integrated all-optical force sensors based on low-loss silicon nitride mechanical resonators with a photonic crystal reflector...
April 17, 2017: Optics Express
https://www.readbyqxmd.com/read/28437956/single-shot-areal-profilometry-using-hyperspectral-interferometry-with-a-microlens-array
#2
Pablo D Ruiz, Jonathan M Huntley
We describe a single-shot technique to measure areal profiles on optically smooth and stepped surfaces for applications where rapid data acquisition in non-cooperative environments is essential. It is based on hyperspectral interferometry (HSI), a technique in which the output of a white-light interferometer provides the input to a hyperspectral imaging system. Previous HSI implementations suffered from inefficient utilisation of the available pixels which limited the number of measured coordinates and/or unambiguous depth range...
April 17, 2017: Optics Express
https://www.readbyqxmd.com/read/28437938/focus-issue-introduction-advanced-solid-state-lasers-assl-2016
#3
Yoonchan Jeong, Christian Kränkel, Almantas Galvanauskas, Kenneth Schepler, Takunori Taira, Shibin Jiang
The editors introduce the focus issue on "Advanced Solid-State Lasers (ASSL) 2016", which is based on the topics presented at a conference of the same name held in Boston, USA, from October 30 to November 3, 2016. This focus issue, jointly prepared by Optics Express and Optical Materials Express, includes 20 contributed papers (14 for Optics Express and 6 for Optical Materials Express) selected from the voluntary submissions from attendees who presented at the conference and have extended their work into complete research articles...
April 17, 2017: Optics Express
https://www.readbyqxmd.com/read/28437916/multiband-selective-absorbers-made-of-1d-periodic-ag-sio-sub-2-sub-ag-core-shell-coaxial-cylinders-horizontally-lying-on-a-planar-substrate
#4
Yi Zhao, Ceji Fu
In this paper, we present a one-dimensional periodic microstructure for multiband selective absorbers of thermal radiation. The microstructure is made of Ag/SiO<sub>2</sub>/Ag core/shell coaxial cylinders horizontally lying on top of a SiO<sub>2</sub> dielectric spacer and an opaque silver substrate. The spectral-directional absorptivity of the proposed structure was numerically investigated with the finite element based Comsol Multiphysics software. Multiband selective absorption in the wavenumber range from 2500 to 20000 cm<sup>-1</sup> for TM-wave incidence was obtained...
April 17, 2017: Optics Express
https://www.readbyqxmd.com/read/28437907/back-focal-plane-displacement-detection-using-side-scattered-light-in-dual-beam-fiber-optic-traps
#5
Wei Xiong, Guangzong Xiao, Xiang Han, Jinhua Zhou, Xinlin Chen, Hui Luo
In optical traps the position of a trapped bead is usually determined by measuring the intensity distribution of the forward-scattered light and the back-scattered light. In this paper we demonstrate that this position can be determined using the side-scattered light. A quadrant photodiode is used to monitor the position of an optically trapped object in a dual-beam fiber-optic trap by measurement of intensity shifts in the back focal plane of the objective that is perpendicular to the propagating beam. An approximated model based on ray optics is presented with numerical results that describe the use of the side-scattered light for position detection...
April 17, 2017: Optics Express
https://www.readbyqxmd.com/read/28437783/evacuation-of-a-tertiary-neonatal-centre-lessons-from-the-2016-kumamoto-earthquakes
#6
Osuke Iwata, Akihiko Kawase, Masanori Iwai, Kazuko Wada
BACKGROUND: Newborn infants hospitalised in the neonatal intensive care unit (NICU) are vulnerable to natural disasters. However, publications on evacuation from NICUs are sparse. The 2016 Kumamoto Earthquakes caused serious damage to Kumamoto City Hospital and its level III regional core NICU. Local/neighbour NICU teams and the disaster-communication team of a neonatal academic society cooperated to evacuate 38 newborn infants from the ward. OBJECTIVE: The aim of this paper was to highlight potential key factors to improve emergency NICU evacuation and coordination of hospital transportation following natural disasters...
April 25, 2017: Neonatology
https://www.readbyqxmd.com/read/28437762/public-attitudes-toward-depression-and-help-seeking-impact-of-the-ospi-europe-depression-awareness-campaign-in-four-european-regions
#7
Elisabeth Kohls, Evelien Coppens, Juliane Hug, Eline Wittevrongel, Chantal Van Audenhove, Nicole Koburger, Ella Arensman, András Székely, Ricardo Gusmão, Ulrich Hegerl
BACKGROUND: Public attitudes toward depression and help-seeking behaviour are important factors influencing depressed people to obtain professional help and adequate treatment. OSPI-Europe is a multi-level suicide prevention programme including a public awareness campaign. It was implemented in four regions of four European countries (Germany, Hungary, Ireland and Portugal). This paper reports the results of the evaluation of the campaign, including its visibility and effects of the campaign on stigma associated with depression and help-seeking behaviour...
April 8, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/28437759/correlation-of-technical-surgical-goals-to-the-gdi-and-investigation-of-post-operative-gdi-change-in-children-with-cerebral-palsy
#8
Christina Bickley, Judi Linton, Nancy Scarborough, Elroy Sullivan, Katy Mitchell, Douglas Barnes
AIM: The purpose of this study was to introduce a standardized set of surgical technical achievement goals (TAGs) as part of a comprehensive outcome assessment model for children with spastic cerebral palsy (CP) undergoing orthopaedic surgical intervention to improve gait. Examination of relationships of these surgical goals to the Gait Deviation Index (GDI) and use of two assessments in tandem provided a thorough picture of technical surgical outcomes. This study also investigated changes in GDI in children with spastic CP after surgery...
April 13, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28437757/abnormal-loading-and-functional-deficits-are-present-in-both-limbs-before-and-after-unilateral-knee-arthroplasty
#9
A J Metcalfe, C J Stewart, N J Postans, P R Biggs, G M Whatling, C A Holt, A P Roberts
Unilateral knee replacement is often followed by a contralateral replacement in time and the biomechanics of the other knee before and after knee replacement remains poorly understood. The aim of this paper is to distinguish the features of arthritic gait in the affected and unaffected legs relative to a normal population and to assess the objective recovery of gait function post-operatively, with the aim of defining patients at risk of poor post-operative function. Twenty patients with severe knee OA but no pain or deformity in any other lower limb joint were compared to twenty healthy subjects of the same age...
April 4, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28437700/nanomolar-electrochemical-detection-of-caffeic-acid-in-fortified-wine-samples-based-on-gold-palladium-nanoparticles-decorated-graphene-flakes
#10
Kokulnathan Thangavelu, Nehru Raja, Shen-Ming Chen, Wei-Cheng Liao
Amalgamation of noble metal nanomaterials on graphene flakes potentially paves one way to improve their physicochemical properties. This paper deals with the simultaneous electrochemical deposition of gold and palladium nanoparticles on graphene flakes (Au/PdNPs-GRF) for the sensitive determination of caffeic acid (CA). The physiochemical properties of the prepared Au/PdNPs-GRF was characterized by using numerous analytical techniques such as scanning electron microscopy, electron dispersive X-ray spectroscopy, Fourier transform infrared spectroscopy, X-ray powder diffraction, Raman spectroscopy and electrochemical impedance spectroscopy...
April 13, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28437486/prediction-of-crime-occurrence-from-multi-modal-data-using-deep-learning
#11
Hyeon-Woo Kang, Hang-Bong Kang
In recent years, various studies have been conducted on the prediction of crime occurrences. This predictive capability is intended to assist in crime prevention by facilitating effective implementation of police patrols. Previous studies have used data from multiple domains such as demographics, economics, and education. Their prediction models treat data from different domains equally. These methods have problems in crime occurrence prediction, such as difficulty in discovering highly nonlinear relationships, redundancies, and dependencies between multiple datasets...
2017: PloS One
https://www.readbyqxmd.com/read/28437450/esprit-forest-parallel-clustering-of-massive-amplicon-sequence-data-in-subquadratic-time
#12
Yunpeng Cai, Wei Zheng, Jin Yao, Yujie Yang, Volker Mai, Qi Mao, Yijun Sun
The rapid development of sequencing technology has led to an explosive accumulation of genomic sequence data. Clustering is often the first step to perform in sequence analy- sis, and hierarchical clustering is one of the most commonly used approaches for this purpose. However, it is currently computationally expensive to perform hierarchical clustering of extremely large sequence datasets due to its quadratic time and space complexities. In this paper we developed a new algorithm called ESPRIT-Forest for parallel hierarchical clustering of sequences...
April 24, 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/28437235/breast-augmentation-and-reconstruction-from-a-regenerative-medicine-point-of-view-state-of-the-art-and-future-perspectives
#13
Luke Evan Visscher, Matthew Cheng, Mohit Chhaya, Madeline Louise Hintz, Jan-Thorsten Schantz, Phong Tran, Owen Ung, Clement Wong, Dietmar Werner Hutmacher
Breast reconstruction and augmentation are very common procedures, yet the prevailing current methods utilize silicone implants that may have significant local complications requiring reoperation. Lipofillling is increasingly used to contour and is considered safe, however its utility is limited by significant volume loss. A new approach could offer an alternative and increase the scope of patient choice. A small number of teams around the world are investigating a breast tissue-engineering paradigm. Conventional breast tissue engineering concepts are based on seeding a scaffold with the patients' own stem cells...
February 24, 2017: Tissue Engineering. Part B, Reviews
https://www.readbyqxmd.com/read/28437233/in-vitro-activity-of-various-antibiotics-in-combination-with-tigecycline-against-acinetobacter-baumannii-a-systematic-review-and-meta-analysis
#14
Jian Li, Xianghai Yang, Lidan Chen, Xinran Duan, Zhihui Jiang
Given that tigecycline-based combination therapy is recognized as a valuable option for the treatment of tigecycline-resistant Acinetobacter baumannii, we conducted this systematic review and meta-analysis to assess the overall evidence of its effectiveness. The synergy rate was defined as the primary outcome that was calculated separately for time-kill, Etest, and checkerboard microdilution methods. The secondary outcomes were bactericidal activity and the efficacy of combination treatment on the development of resistance...
April 24, 2017: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/28437217/fleeing-the-ivory-tower-gender-differences-in-the-turnover-experiences-of-women-faculty
#15
Larry R Martinez, Katharine R O'Brien, Michelle R Hebl
PURPOSE: Prior research has established that women and men faculty have different experiences in their professional and personal lives and that academic turnover can be costly and disruptive to home institutions. However, relatively little research has examined gender differences in the antecedent events that contributed to faculty members' voluntary turnover decisions. This study aims to fill this gap. MATERIALS AND METHODS: Qualitative and quantitative data were obtained in two ways: by directly contacting faculty members who had voluntarily left their positions through the human resource departments at six institutions and through more wide-scale snowball sampling...
February 27, 2017: Journal of Women's Health
https://www.readbyqxmd.com/read/28436917/fault-estimation-observer-design-for-discrete-time-takagi-sugeno-fuzzy-systems-based-on-homogenous-polynomially-parameter-dependent-lyapunov-functions
#16
Xiangpeng Xie, Dong Yue, Huaguang Zhang, Yusheng Xue
This paper investigates the problem of robust fault estimation (FE) observer design for discrete-time Takagi-Sugeno fuzzy systems via homogenous polynomially parameter-dependent Lyapunov functions. First, a novel framework of the fuzzy FE observer is established with the help of a maximum-minimum-priority-based switching mechanism. Then, for every activated switching case, a targeted result is achieved by the aid of exploring an important property of improved homogenous polynomials. Since the helpful information of the underlying system can be duly updated and effectively utilized at every sampled point, the conservatism of previous results is availably reduced...
April 24, 2017: IEEE Transactions on Cybernetics
https://www.readbyqxmd.com/read/28436915/an-adaptive-multiobjective-particle-swarm-optimization-based-on-multiple-adaptive-methods
#17
Honggui Han, Wei Lu, Junfei Qiao
Multiobjective particle swarm optimization (MOPSO) algorithms have attracted much attention for their promising performance in solving multiobjective optimization problems (MOPs). In this paper, an adaptive MOPSO (AMOPSO) algorithm, based on a hybrid framework of the solution distribution entropy and population spacing (SP) information, is developed to improve the search performance in terms of convergent speed and precision. First, an adaptive global best (gBest) selection mechanism, based on the solution distribution entropy, is introduced to analyze the evolutionary tendency and balance the diversity and convergence of nondominated solutions in the archive...
April 17, 2017: IEEE Transactions on Cybernetics
https://www.readbyqxmd.com/read/28436912/distributed-position-based-consensus-of-second-order-multiagent-systems-with-continuous-intermittent-communication
#18
Qiang Song, Fang Liu, Guanghui Wen, Jinde Cao, Xinsong Yang
This paper considers the position-based consensus in a network of agents with double-integrator dynamics and directed topology. Two types of distributed observer algorithms are proposed to solve the consensus problem by utilizing continuous and intermittent position measurements, respectively, where each observer does not interact with any other observers. For the case of continuous communication between network agents, some convergence conditions are derived for reaching consensus in the network with a single constant delay or multiple time-varying delays on the basis of the eigenvalue analysis and the descriptor method...
April 24, 2017: IEEE Transactions on Cybernetics
https://www.readbyqxmd.com/read/28436911/sampled-data-fuzzy-control-for-nonlinear-coupled-parabolic-pde-ode-systems
#19
Zi-Peng Wang, Huai-Ning Wu, Han-Xiong Li
In this paper, a sampled-data fuzzy control problem is addressed for a class of nonlinear coupled systems, which are described by a parabolic partial differential equation (PDE) and an ordinary differential equation (ODE). Initially, the nonlinear coupled system is accurately represented by the Takagi-Sugeno (T-S) fuzzy coupled parabolic PDE-ODE model. Then, based on the T-S fuzzy model, a novel time-dependent Lyapunov functional is used to design a sampled-data fuzzy controller such that the closed-loop coupled system is exponentially stable, where the sampled-data fuzzy controller consists of the ODE state feedback and the PDE static output feedback under spatially averaged measurements...
April 17, 2017: IEEE Transactions on Cybernetics
https://www.readbyqxmd.com/read/28436910/discovering-the-relationship-between-generalization-and-uncertainty-by-incorporating-complexity-of-classification
#20
Xi-Zhao Wang, Ran Wang, Chen Xu
The generalization ability of a classifier learned from a training set is usually dependent on the classifier's uncertainty, which is often described by the fuzziness of the classifier's outputs on the training set. Since the exact dependency relation between generalization and uncertainty of a classifier is quite complicated, it is difficult to clearly or explicitly express this relation in general. This paper shows a specific study on this relation from the viewpoint of complexity of classification by choosing extreme learning machines as the classification algorithms...
April 24, 2017: IEEE Transactions on Cybernetics
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