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关键词： 专业认证   医学检验专业   教学改革  

摘要： 医学检验是临床医学与医学实验技术相结合的一门学科,是医学领域中不可或缺的重要组成部分。医学检验专业起步晚、发展快,自创办以来便面临诸多困难与挑战,2012年全国医学检验专业本科教育实施大改革后,寻找合理的教学方法、探索本专业未来的发展道路更是当务之急。虽然我国医学专业认证起步不久,但专业认证已成为高等医学教育发展的必然趋势。结合医学检验专业目前面临的问题以及专业认证的特点,对医学检验实行专业认证将有助于保障检验医学教育质量,深化教学改革,实现人才培养与社会需求接轨,促进检验专业走向国际化。

关键词： 食品包装   图形   类别  

摘要： 图形是食品包装视觉构成要素中最重要的组成部分,其可通过创意和构思将相关信息进行有效传达,从而让消费者获得快速的认知。本文根据食品包装中图形的不同艺术表现手法,将其大致分为了摄影图形、插画图形、比喻图形、抽象图形这四种,希望能够对食品包装的设计提供一些的理论依据。

关键词： cross-level analysis   interactions   measurement models   quantitative multilevel research  

摘要： Cross-level interaction effects lay at the heart of multilevel contingency and interactionism theories. Also, practitioners are particularly interested in such effects because they provide information on the contextual conditions and processes under which interventions focused on individuals (e.g., selection, leadership training, performance appraisal, and management) result in more or less positive outcomes. We derive a new intraclass correlation, , to assess the degree of lower-level outcome variance that is attributed to higher-level differences in slope coefficients. We provide analytical and empirical evidence that is an index of variance that differs from the traditional intraclass correlation and use data from recently published articles to illustrate that assesses differences across collectives and higher-level processes (e.g., teams, leadership styles, reward systems) but ignores the variance attributed to differences in lower-level relationships (e.g., individual level job satisfaction and individual level performance). Because and provide information on two different sources of variability in the data structure (i.e., differences in means and differences in relationships, respectively), our results suggest that researchers contemplating the use of multilevel modeling, as well those who suspect nonindependence in their data structure, should expand the decision criteria for using multilevel approaches to include both types of intraclass correlations. To facilitate this process, we offer an illustrative data set and the icc beta R package for computing in single- and multiple-predictor situations and make them available through the Comprehensive R Archive Network (i.e., CRAN).

关键词： Normality   power of the test   t-distribution   t-test   trimmed mean  

摘要： The present paper is an attempt to bring to the notice of the researchers, the role of normality inusing a t-test and show them empirically the effect of violation of normality on the inferences drawn on population mean, based on a t-test. The main discussion is on power of the test and how power decreases due to violation of normality. The data considered has been generated in accordance with the objectives and discussion has been provided accordingly. One can use this paper for a sample data which falls under similar situations. We also discuss the advantages of trimming in non-normal situations and how this can improve the power of the t-test. This paper is mainly written to caution the researchers on using a t-test under non-normal environments and introduce trimming in t-test.

关键词： ANFIS   Feature Selection   Cancer Classification  

摘要： A novel way to enhance the performance of a model that combines genetic algorithms and neuro fuzzy logic for feature selection and classification is proposed. This research work involves designing a framework that incorporates genetic algorithm with neuro fuzzy for feature selection and classification on the training dataset. It aims for reducing several medical errors and provides better prediction of diseases. Medical diagnosis of diseases is an important and difficult task, and a proposed method performs feature selection and parameters setting in an evolutionary way. The wrapper approach to feature subset selection is used in this paper because of the accuracy. The performance of the ANFIS classifier was evaluated in terms of training performance and classification accuracy. The objective of this research is to simultaneously optimize the parameters and feature subset without degrading the ANFIS classification accuracy. ANFIS is compared with three other classifiers which are Support Vector Machine (SVM), K-Nearest Neighbour (KNN) and Classification And Regression Trees (CART). ANFIS gives the best results for original data of all the datasets and the predictions for noisy data are adequate in comparison with three others classifiers.

关键词： Dust sample   Sample preparation   Classification   Heavy metal contamination  

摘要： Information on the size dependence of the concentration of pollutants in fine-grained residues is required for the design of classification processes for their processing. For such an analysis, the samples have to be classified prior to chemical analysis. Depending on the particle size range of the residue, a classification method has to be selected. For very fine material, air classification is a suitable method. In this work, the results of the classification of fly ash from a biomass combustion plant with an air classifier are discussed with respect to the observed sample contamination. The chemical analysis of the produced size classes for heavy metals yielded unexpected results. For most heavy metals, the mass balance resulted in a recovery rate of about 100 %;however, for Cr and Ni, the recovery rate was way above 100 %. A more detailed analysis of the data revealed that the ratio of the excess of Cr to Ni in the fly ash was nearly the same as the ratio of Cr to Ni in the material of parts of the classifier. Therefore, erosion of some material from the classifier can be assumed to have caused the contamination of the sample. For the classification of samples, which have to be analysed for Cr and Ni, a classifier has to be used which is made of a material other than stainless steel.

关键词： coastal erosion   landscape evolution   gully erosion   soft-cliff erosion   wave energy  

摘要： Incised coastal gullies (ICGs) are dynamic features found at the terrestrial-coastal interface. Their geomorphic evolution is driven by the interactions between processes of fluvial knickpoint migration and coastal cliff erosion. Under scenarios of future climate change the frequency and magnitude of the climatological drivers of both terrestrial (fluvial and hillslope) and coastal (cliff erosion) processes are likely to change, with an adjunct impact on these types of coastal features. Here we explore the response of an incised coastal gully to changes in both terrestrial and coastal climate in order to elucidate the key process interactions which drive ICG evolution. We modify an extant landscape evolution model, CHILD, to incorporate processes of soft-cliff erosion. This modified version, termed the Coastal-Terrestrial-CHILD (CT-CHILD) model, is then employed to explore the interactions between changing terrestrial and coastal driving forces on the future evolution of an ICG found on the south-west Isle of Wight, UK. It was found that the magnitude and frequency of storm events will play a key role in determining the future trajectory of ICGs, highlighting a need to understand the role of event sequencing in future projections of landscape evolution. Furthermore, synergistic (positive) and antagonistic (negative) interactions were identified between coastal and terrestrial parameters, such as wave height intensity and precipitation duration, which act to modulate the impact of changes in any one parameter. Of note was the role played by wave height intensity in driving coastal erosion, which was found to play a more important role than sea-level rise in determining rates of coastal erosion. This highlights the need for a greater focus on wave height in studies of soft-cliff erosion. Copyright (c) 2014 John Wiley & Sons, Ltd.

关键词： 抽样检验   压力容器   全面检验  

摘要： 能否准确的判断压力容器产品的各项质量,对于压力容器的正常使用有着非常重大的影响。因此,文章通过对抽样检验在压力容器全面检验中的应用进行的阐述,为有关单位及工作人员提供一定的借鉴。

关键词： 金相检验   发展   重要性  

摘要： 经济建设的不断创新与发展,汽车行业的不断壮大以及工业机械的快速发展,在一定程度上带动了特钢行业的发展进步。但是随着各种新技术以及高端设备的不断出现,对于特钢行业而言要求其质量不断提升以及自主创新的能力越来越强,为了适应时代社会发展的需要,满足其质量要求,特钢行业必须加强自主创新的能力。总体而言,就我国目前特钢产量而言,还是具有一定优势的。文章主要针对金相检验技术在特钢中的重要应用进行简要分析与总结,以此推动特钢行业的发展建设,真正意义上促进国民经济建设的发展。

关键词： 块菌   电子鼻   电子舌   主成分分析   传感器  

摘要： 采用电子鼻嗅觉指纹分析系统、电子舌味觉指纹分析系统对不同种类块菌及其加工后样品进行识别,对传感器所收集的数据进行主成分分析、判别因子分析。结果表明:电子鼻技术能够有效识别不同种类块菌,并能够明确区分不同加工方式下的8个块菌样品;电子舌能够将不同种类块菌的新鲜和干燥样品区分开,对不同种类块菌的新鲜样品具有较好的识别和区分能力,但对干燥后的块菌样品识别能力较差,使用判别因子分析比主成分分析更有优势。此研究表明,电子鼻和电子舌均可用于块菌样品的识别,只是识别范围不同。