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关键词： 设备使用   安全监测   存在问题   技术分析  

摘要： 本文将通过对煤炭的安全监测进行探讨,将通过多种技术手段来实现设备缺陷的检测,来避免安全事故的发生,为了保障设备的安全使用,确保为施工单位提供真实可靠的数据,应尽早发现问题及时的进行处理,降低事故的发生概率,从而达到保障煤矿产业内部设备的安全运行,确保煤矿安全的同时为其提供充足的技术支持。

关键词： 区块链   智能合约   以太坊   超级账本  

摘要： 智能合约是区块链系统的核心组件,在现实中广泛应用.然而,目前没有关于智能合约的统一定义,在不同的区块链平台上,智能合约的实现也相差甚远.这样将影响公众对智能合约的认知,也对产业的发展造成障碍.回顾了智能合约的发展历史,梳理其概念的变化过程.归纳智能合约的本质,对现有智能合约的实现进行了分析和对比.给出了面向合同的智能合约的形式化定义,为智能合约的标准化奠定基础.提出了独立于区块链平台的、通用的智能合约实现方法.在目前广泛应用的联盟链区块链平台 Hyperledger Fabric 上面进行了具体实现.最后对未来工作进行了展望.

关键词： 涂料   易燃性   检验   豁免  

摘要： 介绍了国际上关于涂料易燃性的检验依据和判定标准,对涂料易燃性分类及包装豁免涉及的实验方法进行了详细的阐述,便于涂料产品易燃危险性的正确鉴定,从而采用更合理的运输包装,确保涂料产品的运输安全,降低企业的包装运输成本。

关键词： 经济波动   国有经济投资   经济稳定  

摘要： 经济稳定、政治稳定与社会稳定共同构成了当代经济社会健康发展的前提条件。传统的宏观经济政策理论和各国的实践一般都把财政货币政策作为稳定宏观经济运行的主要工具,而在中国特色社会主义市场经济体制下,国有经济投资也发挥了一定作用。本文的研究发现:非国有经济投资具有明显的顺周期性,但国有经济投资的波动性较小,且具有一定逆周期性;分省层面的回归结果显示,国有经济投资比重高的省份,宏观经济波动较小;同时,国有经济投资对GDP具有显著的乘数效应。这些结果表明,国有经济投资发挥了稳定宏观经济作用,但这种稳定作用随着国有企业改革不断深化可能会有所减弱。

关键词： 急慢性白血病   血液分析仪   检验  

摘要： 目的分析血液分析仪在急慢性白血病检验中的应用价值。方法选取我院2017年4月-2018年4月收治的40例白血病患者,根据其类型分为急性白血病组和慢性白血病组,再抽取同时期40名健康志愿者为对照组。对所有研究对象采取血液分析仪进行检验,记录健康志愿者与白血病患者的白细胞计数指标、血红蛋白水平以及CRP水平,对比分析血液分析在白血病诊断中的作用效果。结果对照组健康志愿者的血红蛋白水平明显高于两组白血病患者,其白细胞计数以及CRP水平与两组白血病患者进行比较则相对较低,急性白血病和慢性白血病在这三项指标中也存在明显差异。结论对于急慢性白血病患者可以采用血液分析仪进行诊断,可以有效鉴别急、慢性白血病,具有良好的应用价值。

关键词： classification   gene set enrichment analysis   boosting   kernel method  

摘要： The analysis of cancer genomic data has long suffered "the curse of dimensionality." Sample sizes for most cancer genomic studies are a few hundreds at most while there are tens of thousands of genomic features studied. Various methods have been proposed to leverage prior biological knowledge, such as pathways, to more effectively analyze cancer genomic data. Most of the methods focus on testing marginal significance of the associations between pathways and clinical phenotypes. They can identify informative pathways but do not involve predictive modeling. In this article, we propose a Pathway-based Kernel Boosting (PKB) method for integrating gene pathway information for sample classification, where we use kernel functions calculated from each pathway as base learners and learn the weights through iterative optimization of the classification loss function. We apply PKB and several competing methods to three cancer studies with pathological and clinical information, including tumor grade, stage, tumor sites and metastasis status. Our results show that PKB outperforms other methods and identifies pathways relevant to the outcome variables.

关键词： galaxies: general   galaxies: spiral   galaxies: structure  

摘要： This paper is the third which examines galaxy morphology from the point of view of comprehensive de Vaucouleurs revised Hubble-Sandage (CVRHS) classification, a variation on the original de Vaucouleurs classification volume that accounts for finer details of galactic structure, including lenses, nuclear structures, embedded discs, boxy and discy components, and other features. The classification is applied to the AExtraction of the idealized forms of galaxies in images' (EFIGI) sample, a well-defined set of nearby galaxies which were previously examined by Baillard et al. and de Lapparent et al. The survey is focused on statistics of features, and brings attention to exceptional examples of some morphologies, such as skewed bars, blue bar ansae, bar-outer pseudo-ring misalignment, extremely elongated inner SB rings, outer rings and lenses, and other features that are likely relevant to galactic secular evolution and internal dynamics. The possibility of using these classifications as a training set for automated classification algorithms is also discussed.

关键词： Consumer-to-consumer interaction   Service environments   Excitement   Consumer citizenship behaviors   Golf events  

摘要： Scholarly interest in social interaction has led to a consensus that the desire to engage in a high level of interpersonal interactions with other consumers is one of the major motives for attending sporting events. While prior studies have focused on social interaction as a motivational factor, there is a lack of research that explores consumers' experience of interaction during sporting events. The purpose of the study is to identify and test antecedents and consequences of consumer-to-consumer (CCI) interaction in professional golf events. Using a systematic sampling method, a total of 281 golf attendees were surveyed from three Korean Ladies Professional Golf Association (KLPGA) events. Structural equation modeling was conducted, and the findings supported (a) the full mediating effects of excitement between sport service environments (i.e., other consumers' passion and aesthetic scenery) and consumer citizenship behaviors and (b) the partial mediating effects of CCI between excitement and consumer citizenship behaviors.