3Gmap L-systems: an application to the modelling of wood

In this paper an extension of L-systems is proposed, based on three-dimensional (3D) generalized maps that allow an easier control of the internal structure of 3D objects. A first and original application of this extension is also proposed: wood modelling by growth simulation. Numerous other applications of our work are possible, in the area of computer graphics, as well as in botanical science.     

浅谈面向21世纪的电力电子技术

探讨了21世纪中电力电子技术的研究课题，该课题有的是现有电力电子技术的深化，有的则是新开辟的研究领域。     

Probabilistic enhancement of approximate indexing in metric spaces

Some approximate indexing schemes have been recently proposed in metric spaces which sort the objects in the database according to pseudo-scores. It is known that (1) some of them provide a very good trade-off between response time and accuracy, and (2) probability-based pseudo-scores can provide an optimal trade-off in range queries if the probabilities are correctly estimated. Based on these facts, we propose a probabilistic enhancement scheme which can be applied to any pseudo-score based scheme. Our scheme computes probability-based pseudo-scores using pseudo-scores obtained from a pseudo-score based scheme. In order to estimate the probability-based pseudo-scores, we use the object-specific parameters in logistic regression and learn the parameters using MAP (Maximum a Posteriori) estimation and the empirical Bayes method. We also propose a technique which speeds up learning the parameters using pseudo-scores. We applied our scheme to the two state-of-the-art schemes: the standard pivot-based scheme and the permutation-based scheme, and evaluated them using various kinds of datasets from the Metric Space Library. The results showed that our scheme outperformed the conventional schemes, with regard to both the number of distance computations and the CPU time, in all the datasets.     

Feature Detection and Simplification of 3D Face Data with Facial Expressions

We propose an efficient framework to realistically render 3D faces with a reduced set of points. First, a robust active appearance model is presented to detect facial features in the projected faces under different illumination conditions. Then, an adaptive simplification of 3D faces is proposed to reduce the number of points, yet preserve the detected facial features. Finally, the point model is rendered directly, without such additional processing as parameterization of skin texture. This fully automatic framework is very effective in rendering massive facial data on mobile devices.     

Measurement of linear dimensions of pattern elements of micro- and nano-structures under high- and low-voltage scanning electron microscopes

Measurements of the line width of one and the same test object under high- and low-voltage scanning electron microscopes are performed. Translated from Izmeritel’naya Tekhnika, No. 1, pp. 15–17, January, 2009.     

空分设备主换热器增压通道冰堵故障分析及处理

由于膨胀机增压端后冷却器内漏,30000 m3/h空分设备在临时停车再开车时出现了主换热器增压通道阻力增大现象。采取临时停车对增压通道进行局部加温的方法未能排除故障,后启动空压机,对主换热器部位进行加温解冻才解决问题。简介主换热器增压通道冰堵后的参数变化情况,介绍堵塞通道解冻的具体过程。     

A GENERALIZED RAY-TRACING ALGORITHM FOR INTEGRATED VISUAL AND AUDITORY RENDERING IN ROOM ACOUSTICS∗

Based on various similarities between the propagation natures of light and sound, a generalized ray-tracing algorithm for integrated visual and auditory rendering is proposed in room acoustics. In this algorithm, both the physical model of sound and the physical model of light are treated. Furthermore, a virtual environmental system using this generalized integrated algorithm is proposed for acoustical design and evaluation of auditoriums. These theories will improve the reliability and feasibility of the initial computer acoustic design of the building. Two examples are considered in order to demonstrate the validity of the generalized ray-tracing algorithm.     

Culture and ideology in Ian Suttie's theory of mind.

The author discusses the comprehensive outlook that shaped Ian Suttie's psychology. Suttie is seen as a background influence behind the British school of psychoanalysis, and his ideas pervade that school and therefore late-modern notions of the mind. The author describes the formation of Suttie's independent theory, and argues that his project was expressly ideological, as he tried to counter what he saw as the reactionary and disruptive influence of Freud's classical theory. Suttie offered an optimistic perception of the mind, which could serve as the basis for a progressive social policy. This perception was rooted in the outlook of early 20th-century reforming liberalism, whose preferences and prejudices it shares. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Crossing the divide: Infants discriminate small from large numerosities.

Although young infants have repeatedly demonstrated successful numerosity discrimination across large sets when the number of items in the sets changes twofold (E. M. Brannon, S. Abbott, & D. J. Lutz, 2004; J. N. Wood & E. S. Spelke, 2005; F. Xu & E. S. Spelke, 2000), they consistently fail to discriminate a twofold change in number when one set is large and the other is small (     

Invariant 2D object recognition using KRA and GRA

Computer vision has been extensively adopted in industry for the last two decades. It enhances productivity and quality management, and is flexibility, efficient, fast, inexpensive, reliable and robust. This study presents a new translation, rotation and scaling-free object recognition method for 2D objects. The proposed method comprises two parts: KRA feature extractor and GRA classifier. The KRA feature extractor employs K-curvature, re-sampling, and autocorrelation transformation to extract unique features of objects, and then gray relational analysis (GRA) classifies the extracted invariant features. The boundary of the digital object was first represented as the form of the K-curvature over a given region of support, and was then re-sampled and transformed with autocorrelation function. After that, the extracted features own the unique property that is invariant to translation, rotation and scaling. To verify and validate the proposed method, 50 synthetic and 50 real objects were digitized as standard patterns, and 10 extra images of each object (test images) which were taken at different positions, orientations and scales, were acquired and compared with the standard patterns. The experimental results reveal that the proposed method with either GRA or MD methods is effective and reliable for part recognition.