NCFW专家系统的汉语接口

NCFW系统是适合于花岗岩与变质岩地区的勘探地下水专家系统，系统的人机交互既可用菜单（亦称项目单）方式，亦可用汉语对话方式。这两种方式既可混合使用亦能灵活切换。本文着重描述了汉语接口的设计思想、实现中采用关键技术以及系统运行实例。     

自成像列阵共振腔的分析——Ⅰ.Talbot共振腔

利用自成像效应进行半导体列阵激光器锁相是一种重要的外腔锁相技术,所构成的共振腔可分为Talbot腔和带相位补偿板的Lau腔。我们用Fox-Li方法计算了共振模式。本文给出了Talbot腔的计算结果和分析,表明同相和反相模的损耗随腔长变化存在临界点。     

皂河抽水站变电所主变保护改造

简要介绍WKT型微机保护装置运行情况、存在的问题及改造方案。根据美国通用电气公司(GE)的SR745微机型变压器管理继电器在皂河抽水站变电所的应用，介绍该装置的主要特点、安装调试中遇到的主要问题及解决方法和运行情况等，并对变压器保护改造进行了有益的探索。     

平煤集团以人为本全面推动安全工作

介绍了平煤集团围绕以人为本的理念开展的提升理念、创新管理、加大投入和提高员工素质等一系列安全活动，为进一步抓好安全生产打下了坚实基础。     

论直流电动机换向火花的检测与调整

本文着重探讨直流电动机换向火花的形成、征状以及使用的一些对其进行判别、调整的简单方法，并阐述其原理及效果。     

试述小城镇建设中的生态旅游规划——以江苏省宝应县生态旅游规划为例

生态旅游是以生态环境、生态类型和生态资源为主要旅游对象,以欣赏大自然风光、接受生态知识的科普教育或探索、研究生态科学为主要内容及目的的综合性旅游类型。一、生态旅游规划的原则(一)保护优先原则保护有价值的自然与文化景观资源以及生态环     

In Google We Trust: Users' Decisions on Rank, Position, and Relevance

An eye tracking experiment revealed that college student users have substantial trust in Google's ability to rank results by their true relevance to the query. When the participants selected a link to follow from Google's result pages, their decisions were strongly biased towards links higher in position even if the abstracts themselves were less relevant. While the participants reacted to artificially reduced retrieval quality by greater scrutiny, they failed to achieve the same success rate. This demonstrated trust in Google has implications for the search engine's tremendous potential influence on culture, society, and user traffic on the Web.     

New Solution Approaches to the General Single- Machine Earliness-Tardiness Problem

This paper addresses the general single-machine earliness-tardiness problem with distinct release dates, due dates, and unit costs. The aim of this research is to obtain an exact nonpreemptive solution in which machine idle time is allowed. In a hybrid approach, we formulate and then solve the problem using dynamic programming (DP), while incorporating techniques from branch-and-bound (BB). This approach (DP-BB) has been proven to be effective in solving certain types of scheduling problems. We further propose a new adaptation of the approach to a general problem with a nonregular objective function. To address some shortcomings of DP-BB, we also apply a BB approach in which partial dynamic programming dominance (BB-PDP) is exploited. Computational experiments were conducted with randomly generated test instances in order to evaluate the effectiveness of the two approaches. The results clearly showed that our new approaches can solve all the instances with up to 40 jobs and most of the instances with 50 jobs, which outperforms those frequently used approaches in scheduling research.