Linear independence of internal representations in multilayerperceptrons

Identifies the linear independence of the internal representation of the multilayer perceptron as an essential property for exact learning. The sigmoidal hidden unit activation function has the ability to produce linearly independent outputs. As a result, the minimum number of hidden units for a set of specified input is the number of patterns less the rank of the input patterns. In addition, the basis of many training algorithms is shown to inherently increase the number of linearly independent vectors in the internal representations, thereby increasing the likelihood of exact learning.     

Compact representations for efficient storage of semantic sensor data

Journal of Intelligent Information Systems - Nowadays, there is a rapid increase in the number of sensor data generated by a wide variety of sensors and devices. Data semantics facilitate...     

Compact computation of buckling loads for plane frames consisting of tapered members

Using a unified notation, stiffness matrices for tapered and uniform members are given in a combined set of expressions which are then implemented in a published plane frame buckling program to enable critical buckling load analysis of plane frames which contain tapered sections. Instructions for use of the program together with illustrative examples and an annotated listing of the program are presented.     

Integral minimum variance-like control for pooled non-linear representations with application to an aircraft system

This paper presents an integral minimum variance-like controller design based upon a constant coefficient pooled non-linear autoregressive moving average with exogenous excitation (CCP-NARMAX) representation. The use of pooling techniques significantly enhances the NARMAX representation's ability to accurately describe systems performing under various operating conditions such as aircraft systems, chemical processes, industrial systems and so on. The controller design introduces suitable modifications to account for the characteristics of the CCP-NARMAX representation. The control strategy is subsequently applied to a non-linear aircraft system in order to obtain regulation of the pitch rate around a predetermined value. Comparisons with a conventional PID control design are also made under various operating conditions, including disturbances due to external input and turbulence.     

Proof system representations of degrees of disjoint NP-pairs

Let D be a set of many-one degrees of disjoint NP-pairs. We define a proof system representation of D to be a set of propositional proof systems P such that each degree in D contains the canonical NP-pair of a corresponding proof system in P and the degree structure of D is reflected by the simulation order among the corresponding proof systems in P. We also define a nesting representation of D to be a set of NP-pairs S such that each degree in D contains a representative NP-pair in S and the degree structure of D is reflected by the inclusion relations among their representative NP-pairs in S. We show that proof system and nesting representations both exist for D if the lower span of each degree in D overlaps with D on a finite set only. In particular, a linear chain of many-one degrees of NP-pairs has both a proof system representation and a nesting representation. This extends a result by Glaßer et al. (2009). We also show that in general D has a proof system representation if it has a nesting representation where all representative NP-pairs share the same set as their first components.     

一种混凝土预制构件智能循环养护系统设计

国家提倡混凝土预制构件的使用,传统的混凝土自然养护方法时间长、受到外界环境气温的限制。根据混凝土的养护特性, 对混凝土预制构件养护工艺进行研究,设计了一套智能循环养护系统,完成硬件设计选型,并给出软件控制方法。通过在模台下方放置加热系统以及加湿系统,并采用折叠养护罩将模台构成封闭空间,中央处理器根据采集到的温湿度,控制变频采暖炉的加热功率以及蒸汽加湿系统电磁阀的通断,实现控温控湿的功能。经过工程应用测试,升温阶段2小时内温度达到55℃,湿度达到90%;恒温阶段8小时内温度保持在46℃~60℃,湿度≥90 %,系统取得良好的效果。     

Compact disc standards: an introductory overview

The success of the compact disc (CD) as a storage medium for digital audio has, over the last ten years, resulted in a number of initiatives to use the CD for other applications as well, e.g., as read-only memory for computers, as a storage medium for audio-visual material for multimedia applications, and as a storage medium for photographs. Each of these applications poses additional requirements on how the corresponding information is stored and retrieved, resulting in a range of different CD standards. The functional specifications of these standards are each given a specific color for ease of reference: the Red Book for CD-DA, the Yellow Book for CD-ROM, the Green Book for CD-I, etc. This paper aims at giving an overview of the various CD standards by explaining what is specified in each of the colored books and by indicating how they relate to one another.     

Learning social representations with deep autoencoder for recommender system

World Wide Web - With the development of online social media, it attracts increasingly attentions to utilize social information for recommender systems. Based on the intuition that users are...     

基于CPCI总线的分布式系统设计

为解决大规模系统中数据处理任务重,业务种类多的难点,文章给出一种基于CompactPCI(CPCI)的分布式系统设计,实现了系统板卡间的分工协作和跨总线远程内存访问。本文提出了基于“抽屉机制”的报文存储机制和地址信息维护策略,实现了准确高效的分布式跨总线通信。     

Computer communication as an aid to independence for older adults

Abstract

Computer and communication technologies offer the potential of improving die quality of life for older people by providing them with links to information and services outside of the home. This study examined die feasibility of older people using an electronic text message system to perform routine communication tasks. In addition information was gathered to identify design parameters which facilitate the interactions of older people with such computer based systems. A specialized and simplified ‘communication computer’ was placed in the homes of 36 older women, aged 50–95 years. The system was provided with: a simple text-editor, basic electronic mail functions and access to news/ weather, movie reviews, and health information. Both performance data and user preference data were collected. Results indicated that the participants liked using the system, were able to use it with minimal difficulty, and that it provided a valuable means for social interaction and mental stimulation. The findings suggest that computer-based systems can be a valuable support tool for older adults if they are easy to use, and provide applications that are useful for them.     

Computer communication as an aid to independence for older adults

Computer and communication technologies offer the potential of improving die quality of life for older people by providing them with links to information and services outside of the home. This study examined die feasibility of older people using an electronic text message system to perform routine communication tasks. In addition information was gathered to identify design parameters which facilitate the interactions of older people with such computer based systems. A specialized and simplified 'communication computer' was placed in the homes of 36 older women, aged 50-95 years. The system was provided with: a simple text-editor, basic electronic mail functions and access to news/ weather, movie reviews, and health information. Both performance data and user preference data were collected. Results indicated that the participants liked using the system, were able to use it with minimal difficulty, and that it provided a valuable means for social interaction and mental stimulation. The findings suggest that computer-based systems can be a valuable support tool for older adults if they are easy to use, and provide applications that are useful for them.     

Querying medical databases in an environment offering logical data independence

Medical information systems are becoming popular. Furthermore, their use is expected to be expanded in future. In order to easily extract information from the underlying databases, easy to use man-machine interfaces are required. This paper concerns the doctor interface of the ARPIA medical information system based on a relational database management system. The whole system is currently used inside the Outpatient Pediatric Clinic of the Catholic University of Rome, Italy. The interface provides logical data independence towards the underlying relational database. The paper contains some background about this kind of interfaces, and also, it sketches the software architecture of the implemented prototype.     

BendCad: a design system for concurrent multiple representations of parts

Concurrency in product design and manufacturing process planning is supported in a recently developed sheet metal design system that incorporates preliminary process design at the detail product design stage. This new design with process features approach represents the evolving part form to the designer in multiple process domains and at multiple stages of a sequential process. Each set of part form representations defines the conceptualized process that transforms it from one to the other. At this modeling level, processes are reversible so that design activity can take place in any of the domains and be transferred to the others. We have fully implemented this concept in a sheet metal design/manufacturing system in which preliminary process design occurs concurrently with product design and the normal representational ambiguities of wireframe and flat panel models are eliminated.     

新型分布式全电子计算机联锁系统研究

以联锁机为核心的集中控制方式是目前计算机联锁系统的主流。但其存在风险集中、工程造价较高、系统维护困难等问题。为了进一步提高系统的可靠性、安全性、灵活性,引入区域控制(Field Controller)的概念,将其与分布式控制、智能控制等技术相结合,提出了一种新型的分布式全电子计算机联锁系统结构。以实现进路控制功能为依据建立系统可靠性框图,对其进行定量的可靠性分析及仿真,仿真结果表明系统可保持100000小时可靠运行。以上分析可知:该分布式全电子计算机联锁系统的结构设计合理。     

制造虚拟网络成员企业产量联合优化

分析了制造虚拟网络（MVN）的组织结构及其各成员企业之间的物流关系，建立了描述MVN供应网络物流的投入产出模型，考虑到短生命周期产品市场需求的不确定性，建立了以MVN联合利润最大为目标的各成员企业产量联合优化模型，并证明了目标函数的凹性，发现了目标函数的一阶条件方程决定了超曲面在决策变量张成的平面上的投影为直线，据此给出最优解的解法。     

Conditional independence of multivariate binary data with an application in caries research

For the analysis of caries experience in seven-year old children the association between the presence or absence of caries experience among deciduous molars within each child is explored. Some of the high associations have an etiological basis (e.g., between symmetrically opponent molars), while others (diagonally opponent molars) are assumed to be the result of the transitivity of association and to disappear once conditioned on the caries experience status of the other deciduous molars, covariates and random effects. However, using discrete models for multivariate binary data, conditioning does not remove the diagonal association. When the association is explored on a latent scale, e.g., by a multivariate probit model, then conditional independence can be concluded. This contrast is confirmed when using other models on the (observed) binary scale and on the latent scale. Depending on the point of view, the differences in conditional independence might be seen as a consequence of different types of measurements or as a consequence of different models. An example shows that the results and conclusions can be markedly different with important consequences on model building. The explanation for this result is exemplified mathematically and illustrated using dental data from the Signal-Tandmobiel^® study.