图像识别在吻合器漏针检测中的应用

提出了一种基于图像处理和模式识别技术的计算机吻合器漏针自动检测方法.该检测系统通过微机控制CMOS摄像机拍下吻合器图像,采用二值化、特征提取和模糊聚类等一系列计算机视觉技术检测漏针.实践表明,该方法准确率高、速度快,比传统检测方法有着更高的可靠性和效率.     

Estimation of non-parametric regression for dasometric measures

The aim of this paper is to describe a simulation procedure to compare parametric regression against a non-parametric regression method, for different functions and sets of information. The proposed methodology improves lack of fit at the edges of the regression curves, and an acceptable result is obtained for the no-parametric estimation in all studied cases. Larger differences appear at the edges of the estimation. The results are applied to the study of dasometric variables, which do not fulfil the normality hypothesis needed for parametric estimation. The kernel regression shows the relationship between the studied variables, which would not be detected with more rigid parametric models.     

贺知章简谱

贺知章是初盛唐间一位比较重要的政治历史人物,又是“吴中四士”、“饮中八仙”的成员。对于他的生平事迹,正史虽有记载,但如《旧唐书》、《资治通鉴》等,不免讹误。偶有研究者,亦不免疏略。有感于此,本文通过梳理、考订和辨证,力图初步理清其家世、里贯和生平事迹。     

论城市竞争力中的文化产业因素

目前,文化产业越来越成为影响城市竞争力的关键因素。信息产业是知识经济初级阶段的主要智力产业形态,而文化产业是知识经济高级阶段的主要智力形态。美国许多城市的兴衰过程、当局振兴城市的经验措施以及我国一些城市竞争力的变化证明:文化是城市的软件,是软国力,而文化产业则是城市的硬件,是硬国力;未来城市竞争力日益取决于文化产业的发展。以市场化为文化大产业的突破口,注重借鉴和吸取西方发达国家在这方面的经验和教训,化解负面效应,加快改革步伐,变拨款为投资基金,变扶持文化单位为扶持文化项目,力推文化产品出口创汇等是提升城市竞争力当务之急。     

企业竞争优势的内涵及其培养

企业竞争优势实质上是一种比对手强的相对实力,它直接表现为使企业获取超出行业平均水平的利润.但是,能够获利并不意味着企业具有竞争优势,企业的竞争优势主要来自于外部适应性和内部创新两个方面.为了保证竞争优势的持续性,企业必须永葆创新精神,并有效地防止对手的模仿,必要的时候还应该采取措施,加大对手的经营难度.     

Seasonal Adjustment of Time Series Using One-Sided Filters

This article presents a model-based signal extraction seasonal adjustment procedure to extract estimates of the independent unobserved seasonal and nonseasonal components from an observed time series. The decomposition yields a one-sided filter that is optimal for adjusting the most recent observation under the assumption of using only the past observed series. Some advantages of this procedure are that no forecasts are required for implementation and there are no problems of revision of estimates or questions of concurrent adjustment. Comparisons are made with existing procedures using two-sided filters.     

Discrete Multicolour Random Mosaics with an Application to Network Extraction

We introduce a class of random fields that can be understood as discrete versions of multicolour polygonal fields built on regular linear tessellations. We focus first on a subclass of consistent polygonal fields, for which we show Markovianity and solvability by means of a dynamic representation. This representation is used to design new sampling techniques for Gibbsian modifications of such fields, a class which covers lattice‐based random fields. A flux‐based modification is applied to the extraction of the field tracks network from a Synthetic Aperture Radar image of a rural area.     

解答朱东润先生关于梅尧臣家世的“未易解者”

学界对于北宋诗人梅尧臣的研究历来十分重视,并取得众多成果。但上世纪60年代著名学者朱东润先生留下的关于梅尧臣家世研究的四点疑惑,至今还未有人对之作出进一步解答,文章试在前辈研究的基础上,对四处"未易解者"辨别真伪并做出了判断。     

小波变换图像压码延拓匹配与变换系数研究

研究了延拓匹配,证明了小波变换图像压码中采用Ｄａｕｂ滤波器时,周期延拓比对称延拓在结构上能更好地对滤波器进行匹配;对小波变换域样本场的统计特性和游程概率进行了分析,并在此基础上实现了高压缩比和高信噪比的图像压缩。     

Knowledge extraction from a large on-line survey: a case study for a higher education corporate marketing

For a higher education public institution, young in relative terms, featuring local competition with another private and both long-established and reputed one, it is of great importance to become a reference university institution to be better known and felt with identification in the society it belongs to and ultimately to reach a good position within the European Higher Education Area. These considerations have made the university governors setting up the objective of achieving an adequate management of the university institutional brand focused on its logo and on image promotion, leading to the establishment of a university shop as it is considered a highly adequate instrument for such promotion. In this context, an on-line survey is launched on three different kinds of members of the institution, resulting in a large data sample. Different kinds of variables are analysed through appropriate exploratory multivariate techniques (symmetrical methods) and regression-related techniques (non-symmetrical methods). An advocacy for such combination is given as a conclusion. The application of statistical techniques of data and text mining provides us with empirical insights about the institution members’ perceptions and helps us to extract some facts valuable to establish policies that would improve the corporate identity and the success of the corporate shop.