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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： PENTATRICHOMONAS-HOMINIS   MOLECULAR CHARACTERIZATION   MICROBIOME   COMMUNITIES   CONTRIBUTES   HELMINTHS   THERAPY   HUMANS  

摘要： Author summary Visceral leishmaniasis (VL), also known as kala-azar, is a potentially fatal disease caused by intracellular parasites of the Leishmania donovani complex. VL is a serious public health problem in rural India, causing high morbidity and mortality, as well as major costs to local and national health budgets. People at risk of VL are also at risk of other neglected tropical diseases (NTDs) including soil transmitted helminths (worms). Intestinal worms are potent regulators of host immune responses often mediated through cross-talk with gut bacteria. Here we have used a modern DNA sequencing approach to determine the composition of microbiota in stool samples from VL cases and endemic controls. This allows us to determine all bacteria, as well as all single-celled and multicellular organisms, that comprise the microorganisms in the gut in a single sequencing experiment from a single stool sample. In addition to providing valuable information concerning commensal and pathogenic gut micro-organisms prevalent in this region of India, we find some specific associations between single-celled gut pathogens and VL case status. Visceral leishmaniasis (VL) caused by Leishmania donovani remains of public health concern in rural India. Those at risk of VL are also at risk of other neglected tropical diseases (NTDs) including soil transmitted helminths. Intestinal helminths are potent regulators of host immune responses sometimes mediated through cross-talk with gut microbiota. We evaluate a meta-taxonomic approach to determine the composition of prokaryotic and eukaryotic gut microflora using amplicon-based sequencing of 16S ribosomal RNA (16S rRNA) and 18S rRNA gene regions. The most abundant bacterial taxa identified in faecal samples from Bihar State India were Prevotella (37.1%), Faecalibacterium (11.3%), Escherichia-Shigella (9.1%), Alloprevotella (4.5%), Bacteroides (4.1%), Ruminococcaceae UCG-002 (1.6%), and Bifidobacterium (1.5%). Eukaryotic taxa identified

关键词： crop classification   spatial autocorrelation   Regression Kriging   IMAGE CLASSIFICATION   RANDOM FOREST  

摘要： In order to discuss potential sustainability issues of expanding silage maize cultivation in Rhineland-Palatinate, spatially explicit monitoring is necessary. Publicly available statistical records are often not a sufficient basis for extensive research, especially on soil health, where risk factors like erosion and compaction depend on variables that are specific to every site, and hard to generalize for larger administrative aggregates. The focus of this study is to apply established classification algorithms to estimate maize abundance for each independent pixel, while at the same time accounting for their spatial relationship. Therefore, two ways to incorporate spatial autocorrelation of neighboring pixels are combined with three different classification models. The performance of each of these modeling approaches is analyzed and discussed. Finally, one prediction approach is applied to the imagery, and the overall predicted acreage is compared to publicly available data. We were able to show that Support Vector Machine (SVM) classification and Random Forests (RF) were able to distinguish maize pixels reliably, with kappa values well above 0.9 in most cases. The Generalized Linear Model (GLM) performed substantially worse. Furthermore, Regression Kriging (RK) as an approach to integrate spatial autocorrelation into the prediction model is not suitable in use cases with millions of sparsely clustered training pixels. Gaussian Blur is able to improve predictions slightly in these cases, but it is possible that this is only because it smoothes out impurities of the reference data. The overall prediction with RF classification combined with Gaussian Blur performed well, with out of bag error rates of 0.5% in 2009 and 1.3% in 2016. Despite the low error rates, there is a discrepancy between the predicted acreage and the official records, which is 20% in 2009 and 27% in 2016.

关键词： classification   gene set enrichment analysis   boosting   kernel method   REGRESSION   PROGRESSION   PROTEINS   CALCIUM   CANCER  

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： Consumer-to-consumer interaction   Service environments   Excitement   Consumer citizenship behaviors   Golf events   CUSTOMERS   SATISFACTION   QUALITY   SCALE  

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.

关键词： Visual media   alpha waves   beta waves   environmental features   SCENIC BEAUTY   NATURAL-ENVIRONMENT   BETA-ACTIVITY   ALPHA-RHYTHM   INNER-CITY   OSCILLATIONS   VALIDITY   PERFORMANCE   PREFERENCE   STRESS  

摘要： This study uses psychophysiological measures, alpha and beta waves, to examine the appropriateness of videos as visual media to represent a human-made lake. Results indicate that alpha brainwaves are associated more with peaks in the on-site condition than with peaks in the video condition, whereas beta waves show the opposite pattern. The findings suggest that people respond differently to a real lake and its video simulation. Moreover, the relationships between the brainwave responses of the participants across time and the environmental features shown in the video are identified. The findings show that four categories of landscape features may be associated with significant bursts of beta rhythms: conjunction/turns of paths, ambiguous water features, disadvantageous landscapes, and obtrusive artifacts. Design implications are discussed based on the results.

关键词： 干化学法   尿沉渣法   尿常规检验  

摘要： 目的研究在尿常规检验中采用干化学法和尿沉渣的检验效果。方法选择我院在2017年11月至2018年11月收治的112例行尿常规检验的患者,抽签法将其分析对照组(56例,行干化学法检验)和观察组(56例,行干化学法与尿沉渣法联合检验)。对比两组患者检验的结果。结果观察组定量红细胞和定量白细胞的阳性率高于对照组,观察组定量红细胞和定量白细胞的阴性率低于对照组,观察组漏诊率、误诊率和错误率均低于对照组,P<0.05存在统计学意义。结论在尿常规检验中采用干化学法和尿沉渣的检验效果显著,可以提升并细胞和定量白细胞的检出率,可以在临床上推广使用。