一种基于评价函数的三维矩形布局遗传算法     

甄士刚  王金敏 《天津职业技术师范学院学报》2014,(1):9-12

针对三维矩形布局问题,提出一种基于评价函数的布局遗传算法.该算法根据布局已知条件建立定序和定位评价函数,然后通过对评价函数值的比较确定布局的定序和定位规则;最后采用遗传算法优化定序和定位规则的参数.算例测试结果表明,该算法具有良好的计算效果.  相似文献   

高职院校培养物流外包人才的优势探索     

侯心媛  宇宙锋 《辽宁高职学报》2014,(3):13-14

高职院校在面对物流外包产业人才紧缺和人才市场激励竞争的今天,以职业能力培养为特色的办学模式正在形成。高职院校要积极探索教学模式,不断改革教学方法,培养实用型、复合型物流外包人才。通过分析物流业务外包的现状,提出高职院校培养物流外包人才的优势。  相似文献   

Split Personality and Alienated Youth:On J.D.Salinger's “The Catcher in the Rye”     

周林英 《海外英语》2014,(12):211-213

J. D. Salinger, American novelist and short story writer, is recognized by critics and readers alike as one of the most popular and influential of contemporary writers.His only novel,"The Catcher in the Rye",so vividly captured the spirit of the fifties and early sixties that those years have been called"The Age of Holden Caulfield."Salinger draws a rich psychological portrait of Holden Caulfield through vivid, colloquial style,using slang and ungrammatical or sloppy pattern of speech. Drawing on an analysis of Salinger's life and his age,this paper seeks to explore Salinger's portrayal of a disillusioned youth and the exposure of the fraudulence of contemporary America in combination with his manipulation of colloquial style and dramatization of interior monologue.  相似文献   

数字式多功能车刀角度测量仪的研究     

徐晓龙  王万新 《德州学院学报》2014,(2):73-75,79

为了提高车刀几何角度的测量精度,在原有车刀角度测量仪的基础上,改进设计了一种数字式多功能车刀角度测量仪.该角度测量仪以单片机为控制核心,利用角度传感器为信息采集模块,通过模数转换模块,将所测车刀角度值以数字形式实时显示出来,可以方便的测量车刀几何角度.  相似文献   

以内容为依托的服务外包英语教材编写探讨     

严世清  陈素花 《苏州教育学院学报》2014,(2):79-82

随着经济全球化的日益加深,大力发展现代服务业对培养应用型、复合型人才的大学英语教育提出了更高的要求。在需求分析的基础上,以学科内容为依托的外语教学理论作为指导,探讨“服务外包英语”教材的编写思路,提出了以开发职业能力为教学目标,在内容上建立教学策略、整合听说读写技能、设计任务型训练项目的思路,并从专业发展和合作教学方面探讨了教师的作用。  相似文献   

《路得记》人物角色的转换     

莫铮宜 《宁波教育学院学报》2014,(4):69-71

本文运用"角色发展模型",对危机状态下《路得记》中人物角色发展变化进行了分析研究。笔者认为故事情节的演变也是主人公角色转换的过程。在此过程中,角色的特征尤其是性别特征表现出相当强的模糊性和流动性,《路得记》中人物角色的转换就鲜明地体现了这一特征,这表明故事中人物角色的转换具有很强的社会功能,它是危机得以解决的重要手段。  相似文献   

基于Solidworks三维建模的制图测绘教学改革探索     

张伟华  刘立平 《兰州石化职业技术学院学报》2014,(3):56-58

针对高职院校机械类专业开设的制图测绘实训课程,分析了目前制图测绘教学中出现的学生忽视测量准确性、零部件表达不准确、疲于完成图纸绘制等问题,提出了将三维建模引入制图测绘教学,利用三维模型与二维图纸的转换提升零部件表达的准确性、利用三维装配来约束零件尺寸测量的准确性,同时由三维模型直接生成二维工程图,大大提高了绘图的速度和准确度,也符合现代设计理念。  相似文献   

图书馆业务外包理论与实践研究的系统力作——评《图书馆业务外包》     

张雪梅 《新世纪图书馆》2014,(6):90-91

论文对图书馆业务外包研究的开创之作——陈新洁著《图书馆业务外包》一书的特色与不足进行了客观的评析。《图书馆业务外包》是一部全面阐述图书馆业务外包理论与实践的力作,它创新性地提出了图书馆信息技术外包、流通业务外包理论框架。此书体系完备、观点前沿、论证充分,对推动图书馆业务外包的研究和实践有积极意义。  相似文献   

Technological similarity,post-acquisition R&D reorganization,and innovation performance in horizontal acquisitions     

Massimo G. Colombo  Larissa Rabbiosi 《Research Policy》2014

This paper aims to disentangle the mechanisms through which technological similarity between acquiring and acquired firms influences innovation in horizontal acquisitions. We develop a theoretical model that links technological similarity to: (i) two key aspects of post-acquisition reorganization of acquired R&D operations – the rationalization of the R&D operations and the replacement of the R&D top manager, and (ii) two intermediate effects that are closely associated with the post-acquisition innovation performance of the combined firm – improvements in R&D productivity and disruptions in R&D personnel. We rely on PLS techniques to test our theoretical model using detailed information on 31 horizontal acquisitions in high- and medium-tech industries. Our results indicate that in horizontal acquisitions, technological similarity negatively affects post-acquisition innovation performance and that this negative effect is not mediated by the reorganization of the acquired R&D operations. However, replacing the acquired firm's R&D top manager leads to R&D productivity improvements that positively affect innovation performance.  相似文献   

The lag structure of the relationship between patenting and internal R&D revisited     

Ning Wang  John Hagedoorn 《Research Policy》2014

The principal purpose of this study is to revisit the classic research question regarding the lag structure of the patents–R&D relationship through an examination of the impact of internal R&D on firm patenting in the context of the global pharmaceutical industry during 1986–2000. Our empirical analysis, using both a multiplicative distributed lag model and a dynamic linear feedback model, differs from previous work that examines the patents–R&D relationship in three aspects. First, our estimation results exhibit direct evidence on lagged R&D effects, with the first lag (t − 1) of R&D being significant in all distributed lag specifications. Second, a U-shaped lag structure of the patents–R&D relationship is found in most estimations of the multiplicative distributed lag model, which suggests a potential long-run effect of internal R&D investments on firm patenting. Finally, the results from the dynamic linear feedback model coincide with those from the multiplicative distributed lag model, indicating not only lag effects from more recent R&D but also an overall long-run effect of internal R&D investments in the distant past on the knowledge production or innovation process of incumbent pharmaceutical firms.  相似文献