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关键词： Burn out   below poverty line   claims   conversion   health insurance   hospitalization  

摘要： The study is an endeavour to study the impact of Rashtriya Swasthya Bima Yojna (RSBY) on the below poverty line (BPL) population in 30 states of India. In order to identify the impact, the study focused on four key performance indicators (KPIs)-claims ratio (utility to the beneficiaries), conversion ratio (to measure depth of outreach subject to the quality of the BPL list), hospitalization ratio (to gauge utilization) and total expense ratio (to evaluate profitability to the insurer). These KPIs are analyzed from aggregated state-level data for the first year of operations from 24 states, for the second year from 17 states and for the third year from five states. This analysis fills us with a sense of achievement. The results revealed that the first year under the RSBY was a period for experience gain and the scheme and processes there under are gradually stabilizing but there is still much to be done. An appraisal of the scheme attempted on the basis of experience gained in second and third round focused to acknowledge that the scheme has indeed been successful.

摘要： Although petroleum hydrocarbons discharged from the Deepwater Horizon (DWH) blowout were shown to have a pronounced impact on indigenous microbial communities in the Gulf of Mexico, effects on nearshore or coastal ecosystems remain understudied. This study investigated the successional patterns of functional and taxonomic diversity for over 1 year after the DWH oil was deposited on Pensacola Beach sands (FL, USA), using metagenomic and 16S rRNA gene amplicon techniques. Gamma-and Alphaproteobacteria were enriched in oiled sediments, in corroboration of previous studies. In contrast to previous studies, we observed an increase in the functional diversity of the community in response to oil contamination and a functional transition from generalist populations within 4 months after oil came ashore to specialists a year later, when oil was undetectable. At the latter time point, a typical beach community had reestablished that showed little to no evidence of oil hydrocarbon degradation potential, was enriched in archaeal taxa known to be sensitive to xenobiotics, but differed significantly from the community before the oil spill. Further, a clear succession pattern was observed, where early responders to oil contamination, likely degrading aliphatic hydrocarbons, were replaced after 3 months by populations capable of aromatic hydrocarbon decomposition. Collectively, our results advance the understanding of how natural benthic microbial communities respond to crude oil perturbation, supporting the specialization-disturbance hypothesis;that is, the expectation that disturbance favors generalists, while providing (microbial) indicator species and genes for the chemical evolution of oil hydrocarbons during degradation and weathering.

关键词： Micro-thread   dental implant   finite element analysis   biomechanics   stress analysis  

摘要： The purpose of this work is to analyse the influence on the biomechanical behaviour of dental implants of a micro-thread at their cervical part as well as of a cylindrical geometry at an intermediate zone. Stresses and strains in the elements involved, that is, bone, implant, screw and abutment, have to be considered in detail. Three different three-dimensional finite element models are generated to analyse the behaviour of the various components under the so-called tightening and operating conditions. For the modelling, material specifications for the cancellous bone and cortical bone, on one hand, and titanium properties for the implant, screw and abutment, on the other, are implemented. The tightening condition was fixed according to the stresses in the screw. The operating conditions were simulated by applying a force of 150N, taking into account ISO 14801:2007 standard. The maximum stress under tightening conditions occurs always in the screw, while under operating conditions it is produced at the screw or the abutment, although considerable stress values are also present in the implant. In all the models, the maximum stress at the junction between the implant and the bone occurs within the cortical bone. Implants provided with micro-thread at the cervical position are advantageous over homogeneously threaded implants since lower stresses in both the implant and the adjacent bone are produced. A cylindrical intermediate portion on the implant surface does not present special advantage over the implants with continuous external thread under tightening and operating conditions.

关键词： LF EMF   neutrophilic granulocytes   microvilli   HL-60   calcium influx  

摘要： We are increasingly exposed to low-frequency electromagnetic fields (LF EMFs) by electrical devices and power lines, but if and how these fields interact with living cells remains a matter of debate. This study aimed to investigate the potential effect of LF EMF exposure on calcium signalling in neutrophils. In neutrophilic granulocytes, activation of G-protein coupled receptors leads to efflux of calcium from calcium stores and influx of extracellular calcium via specialised calcium channels. The cytoplasmic rise of calcium induces cytoskeleton rearrangements, modified gene expression patterns, and cell migration. If LF EMF modulates intracellular calcium signalling, this will influence cellular behaviour and may eventually lead to health problems. We found that calcium mobilisation upon chemotactic stimulation was not altered after a short 30min or long-term LF EMF exposure in human neutrophil-like cell lines HL-60 or PLB-985. Neither of the two investigated wave forms (Immunent and 50Hz sine wave) at three magnetic flux densities (5T, 300T, and 500T) altered calcium signalling in vitro. Gene-expression patterns of calcium-signalling related genes also did not show any significant changes after exposure. Furthermore, analysis of the phenotypical appearance of microvilli by scanning electron microscopy revealed no alterations induced by LF EMF exposure. The findings above indicate that exposure to 50Hz sinusoidal or Immunent LF EMF will not affect calcium signalling in neutrophils in vitro. Bioelectromagnetics. 36:430-443, 2015. (c) 2015 Wiley Periodicals, Inc.

关键词： 领导-成员交换   员工敬业度   基于组织的自尊   内部人身份认知  

摘要： 本研究主要以四川地区金融服务业一线员工为研究对象,探讨了领导-成员交换(LMX)对员工敬业度的影响机制以及基于组织的自尊对这一机制的调节作用。研究结果表明:(1)领导-成员交换对员工敬业度有显著的正向影响;(2)员工的内部人身份认知在领导成员交换对员工敬业度影响过程中起部分中介作用;(3)基于组织的自尊调节了内部人身份认知对员工敬业度的作用效果。结论显示,对于基于组织的自尊处于高水平的员工而言,易通过内部人身份认知做出敬业度高的表现与行动。

关键词： GALLIUM arsenide   EMISSION spectroscopy   QUANTUM dots   SURFACE charges   DIFFUSION  

摘要： Making use of droplet epitaxy, we systematically controlled the height of self-assembled GaAs quantum dots by more than one order of magnitude. The photoluminescence spectra of single quantum dots revealed the strong dependence of the spectral linewidth on the dot height. Tall dots with a height of ∼30nm showed broad spectral peaks with an average width as large as ∼5 meV, but shallow dots with a height of ∼2 nm showed resolution-limited spectral lines (≤120μeV). The measured height dependence of the linewidths is in good agreement with Stark coefficients calculated for the experimental shape variation. We attribute the microscopic source of fluctuating electric fields to the random motion of surface charges at the vacuum-semiconductor interface. Our results offer guidelines for creating frequency-locked photon sources, which will serve as key devices for long-distance quantum key distribution.

关键词： 基坑   支护模拟   位移迭代法  

摘要： 鉴于目前基坑工程的发展和一些现状,本文分析了对基坑开挖后坑体周围土体的一些变化,为了更好的模拟基坑工程中支护结构的受力和变形情况,用位移迭代法,通过工程实例进行了验证,模拟与结果基本吻合,证明了此法可行,从而有效的解决了基坑数值模拟中存在的一些问题,最后用位移迭代法探究了各种因素对基坑支付的守和变形的影响,以期为插入支护桩的深度、土体加固的深度等等参数的选择提供一些参考。

关键词： 桥梁工程   实验模态   动力分析  

摘要： 桥梁结构动力试验包含自振特性测试和各种条件的行车试验。实际检测时主要是利用测试冲击系数和自振频率这2项参数对桥梁结构承载能力进行评价,对于阻尼、振型等测试结果没有评判方法,仅列在检测报告中供参考。在实测中发现,频率、振型、阻尼的测试结果与设计计算值差异性较大,因此可以推断按设计值计算的结构动力响应(地震、抗风)计算结果与实际响应也应有较大差距。以基于振型分解法的理论作为基础,提出采用试验模态的实测数据进行动力计算,进而可以较为准确地评价桥梁结构的动力响应。

关键词： 光纤传感器   法珀干涉仪   振动位移   压电陶瓷   偏置点稳定  

摘要： 为了实现超声换能器辐射面的振动测量,本文研究了一种基于光纤法珀干涉仪偏置点控制的高频振动位移测量方法,具有抗环境干扰、精度高等优点.针对正交相位偏置点解调方法中偏置点不稳定的问题,提出并分析了一种采用压电陶瓷叠堆执行器调整腔长稳定偏置点的工作原理,并对高频振动位移测量系统的性能进行了实验测试.实验结果表明:通过反馈控制腔长可以实现法珀干涉仪相位偏置点的稳定;位移测量系统的位移分辨率高于0.229nm;测得位移和换能器的输入电压的非线性度小于3.41%.

关键词： 隧道开挖   两阶段法   剪切位移法  

摘要： 隧道开挖会引起周围土层产生位移,使桩基产生附加内力和位移,降低桩身承载力,因此,分析隧道开挖对邻近桩基影响具有非常重要的意义。分三步进行分析,首先采用剪切位移法代入桩基平衡微分方程计算出原始状态下桩身的位移、轴力和桩周摩阻力;然后利用两阶段分析法求解给出隧道开挖对邻近单桩承载力的影响,第一阶段采用Loganathan等提出的解析解计算隧道开挖后引起的桩周土体自由位移;第二阶段基于剪切位移法原理,将土体自由位移施加到桩身,求出隧道开挖引起的桩身附加位移、轴力和摩阻力变化量;最后,将开挖前与开挖引起的桩身轴力和桩周摩阻力进行叠加得开挖后桩身轴力和摩阻力。验算桩身轴力以及摩阻力改变后桩身承载力以及混凝土强度。