Musical chronology by seriation

The statistical process of seriation arranges a set of objects along a one-dimensional line so that the distance between each pair of objects reflects the dissimilarity between them. The process has recently been cast into an algorithm which makes it feasible to seriate a few tens of objects efficiently on a personal computer. This algorithm is now used for establishing a chronology of the Troubadours according to certain melodic features in their works. Other musicological uses for seriation are proposed.David Halperin is a Lecturer in the Department of Musicology, Tel Aviv University, specializing in computer-aided analysis of monophonic music. He has published articles on the Ambrosian chant and on the ancient musical notation from Ugarit. His publications include A Segmentation Algorithm and its Application to Medieval Monophonic Music,Musikometrika, 2 (1990) and Towards Deciphering the Ugaritic Musical Notation,Musikometrika, 4 (1992).This is an expanded version of a paper given at the 15th Congress of the International Musicological Society, Madrid, 1992.     

武器维修器材包装系列研究(1):研究情况概述

介绍武器维修器材包装系列研究的主要技术成果。该成果运用系统工程原理,从整个器材流通过程出发,通过全面、深入的研究,使器材包装融生产、运输、储存、管理、供应、使用为一体,为器材包装的通用化、系列化、标准化奠定了基础。     

浅谈现代化制浆造纸项目总图设计

在实践基础上,根据现代化制浆造纸厂的生产特点以及物流分析,阐述了以物流为核心的集中布置、系列化布置的科学性和合理性以及如何在总图设计中控制投资。     

DF7G型机车冷却装置模块化设计

介绍了DF7G型调车机车冷却装置模块化设计,以冷却室钢结构为基本单元,通过选配冷却零部件,为该型机车装用与不同型号柴油机匹配的冷却装置,从而形成冷却装置模块化、规范化、系列化、标准化。     

系列化图形自动生成的新方法

本文介绍了一种新颖实用的图形生成新方法。在一次性交互作图的基础上,对其余系列化图形只要改变尺寸则图形自动生成。提出了参数分类的概念,并研究参数分配策略;由无序的几何元素列有序的环生成,深入研究了正负法及方向性几何交切并实施了它们间的转化,形成了参数表机制;由参数表转化为实参表,实现了系列化图形自动生成。这一方法必将真正得到推广应用。     

基于变形的产品系列化设计方法

变形设计是指对图形或立体进行变形后再进行设计的方法.在对参数化与产品系列化设计之间关系进行分析研究的基础上,结合产品几何特征的继承关系,在Pro/E环境下,利用"自上而下"设计(TopDown Design)方法,形成了变形设计、参数化与特征继承关系相结合的产品系列化设计方法,即主控零件法.该方法主要针对一些外形不能完全参数化的、非规则的工业产品的系列化设计而提出的,它不但支持并行工程及工作组之间的协同设计和相关设计,而且可大大缩短产品的开发周期,快速更新产品,以满足瞬息万变的市场需求.     

Parameterisation of the MRP method: automatic identification and extraction of properties

The overall context of this paper is the parameterisation of the material requirement planning method. It is crucial to be able to evaluate the potential effects of the parameters on the production system’s performance indicators (PI). This evaluation is generally the result of the combination of an experimental design with a production system simulator. This paper proposes an approach facilitating the interpretation of the effects of the experimental design method. The specific feature of our approach is that it proposes the classification of the effects as a model for the automatic identification and extraction of the properties. These characterise the relations between the parameters and the PI.     

壳体类零件的参数化自动绘图

本文详述了用ＦｏｘＢＡＳＥ和ＡｕｔｏＬＩＳＰ实现壳体类零件的参数化设计新方法，并针对ＡｕｔｏＣＡＤ绘图软件功能的缺陷，论述了标准图框及形位公差的自动标注和正确绘制剖面线的方法。     

六角头螺栓的系列化CAD绘图程序设计

介绍六角头螺栓的计算机自动绘图的设计过程,为六角头螺栓的系列化绘图提供依据。     

An information processing model of some seriation tasks.

Children were video-tape recorded while trying to solve one of Piaget's weight seriation tasks. Detailed protocol analyses and computer simulations of the behavior of three children at different stages of intellectual development are presented. The programs, organized as systems of production rules, simulate the Ss' behavior in detail. They show how intellectual development is related to the Ss' (a) progressive sophistication in structuring their environment, (b) better use of memory, (c) span for drawing inferences, and (d) initial conception of what a seriation is, as reflected in such parameters as the adequacy of their stop rules and single vs. multiple block comparisons. Two additional experiments (N=35) compare length with weight seriation; access to information is controlled in one of the length seriation conditions. Results indicate that the typically observed décalage in performance on the two tasks largely disappears when a systematic effort is made to render the information-processing requirements of the two tasks isomorphic. (PsycINFO Database Record (c) 2010 APA, all rights reserved)