基于约束优化的联想记忆模型学习算法

本文提出了一种对称互连神经元网络的学习策略,利用全局约束优化方法确定连接权。优化过程采用了梯度下降技术。这种学习算法可以保证训练样本成为系统的稳定吸引子,并且具有优化意义上的最大吸引域。本文讨论了网络的存储容量,训练样本的渐近稳定性和吸引域大小。计算机实验结果说明了学习算法的优越性。     

关于高职院校几点教学改革的思考

高等职业技术教育要求把握好理论教学与实践教学的关系，探索适合培养目标的教学方法，综合运用多种教学方法，十分重视搞好实践教学，适度调整教材结构和测评方法，把教书与育人结合起来。     

Vasopressin and the transmission of paternal behavior across generations in mated, cross-fostered Peromyscus mice.

The role of arginine vasopressin (AVP) in the nongenomic transfer of paternal behavior from fathers to offspring was examined in Peromyscus. Male California mice (P. californicus) exposed to fewer retrievals by white-footed mouse (P. leucopus) foster parents displayed fewer retrievals of biological offspring. In contrast, white-footed mice were retrieved equally rarely by California mouse foster parents and by biological parents and displayed no changes in pup retrieval behavior. AVP-immunoreactive staining in the bed nucleus of the stria terminalis may predict paternal behavior because it correlated positively with retrievals and with a score consisting of huddling, grooming, and time inside the nest. The authors discuss AVP as a possible mechanism by which early experience shapes adult paternal behavior. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Interface Management within Construction: In Particular, Building Facade

This paper discusses the need for interface management within construction, with particular reference to building facade interfaces. It categorizes the three different types of interface management—physical, contractual, and organizational. The implication of interface management in construction contracting is discussed; it is explained how the U.K. procurement trends have changed, affecting the interface management within projects. U.K. cladding procurement is very fragmented, and the paper maps the development of a typical cladding system showing the complexities of interface management. Finally, the paper discusses CladdISS, a U.K. government funded research project to develop a standardized strategy for the design and management of window and cladding interfaces. It explains the principles of CladdISS with reference to process maps, action plans, management strategy, bibliography, advice on standards, materials, maintenance, joints, movement, and tolerances. This will enable strategies to be developed to avoid the endemic interface problems occurring on-site. It will also guide the management of the interfaces throughout the project.     

计量秤在变角度状态的实践

介绍了物料计量秤在变角度下如何计算重量，以及变角度显示仪的工作原理和在实际中的运用。     

Ideal-gas thermodynamic properties for natural-gas applications

Calculating caloric properties from a thermal equation of state requires information such as isobaric heat capacities in the ideal-gas state as a function of temperature. In this work, values for the parameters of thec _p ⁰ correlation proposed by Aly and Lee were newly determined for 21 pure gases which are compounds of natural gas mixtures. The values of the parameters were adjusted to selectedc _p ⁰ data calculated from spectroscopic data for temperatures ranging from 10 to 1000 K. The data sources used are discussed and compared with literature data deduced from theoretic models and caloric measurements. The parameters presented will be applied in a current GERG project for evaluating equations of state (e.g., the AGA 8 equation) for their suitability for calculating caloric properties.     

MITI projects on recycling

MITI has actively done R&D on industrial technology for waste and reclamation and so there are many research items from small scale to large scale. However, Ecofactory and researches on recycling of metallic materials are introduced here. Ecofactory was proposed by the Mechanical Engineering Laboratory and is now at the stage of the Leading Research, a new research scheme in AISt. Researches on recycling of metallic materials are being done with subsidy. Those researches should contribute to both the preservatin of the global environment and effective recycling of waste materials.Abbreviations AIST Agency of Industrial Science and Technology - MITI Ministry of International Trade and Industry - NEDO New Energy and Industrial Technology Development Organization     

VCM压缩机曲轴断裂失效分析

介绍了锦化化工(集团)有限责任公司出现的VCM压缩机曲轴断裂事故，并从断口的部位、形貌特征，断轴的几何状态、受力状态及树料性能等方面分析了曲轴断裂的根本原因。     

The State of the Art in Text Filtering

This paper develops a conceptual framework for text filtering practice and research, and reviews present practice in the field. Text filtering is an information seeking process in which documents are selected from a dynamic text stream to satisfy a relatively stable and specific information need. A model of the information seeking process is introduced and specialized to define text filtering. The historical development of text filtering is then reviewed and case studies of recent work are used to highlight important design characteristics of modern text filtering systems. User modeling techniques drawn from information retrieval, recommender systems, machine learning and other fields are described. The paper concludes with observations on the present state of the art and implications for future research on text filtering. This revised version was published online in July 2006 with corrections to the Cover Date.     

南哨水电站拱坝体型设计

南哨水电站位于雷公山暴雨中心区， 洪水峰高量大， 水库基本无滞洪削峰， 由于坝址处河床深切而狭窄， 溢洪道作拱坝坝身表孔溢流短鼻坎挑流的布置。为使溢洪道既有较好的挑流消能效果， 又能达到控制大坝工程投资的双重目的， 将混凝土拱坝体型作了一反常规的设计布置， 即河床部分悬臂梁的上部向水库倒悬呈负坡， 岸边悬臂梁渐变为竖直呈正坡； 水平拱圈曲率由高到低逐渐变小， 而曲率半径则逐渐加大。拱坝的体型适应了溢洪道作高落差挑流鼻坎的布置， 使其溢洪舌远离坝脚， 经运行１３ 年来多次洪水的检验， 在下游不做消能防冲工程措施的情况下， 保证了大坝和下游两岸岩体的稳定安全， 而大坝和溢洪道运行状态良好。