变频器结合PLC在供热系统中的应用

文章介绍了一种变频器结合PLC对循环泵智能控制的方法,节能降耗,提高工作效率,针对循环泵的变频控制,根据用户需求可以自由选择手动或者自动的控制方式。在实际应用中,有很好的实际效果。     

基于“家电以旧换新”回收数据评估电子废物产生量估算方法

比较了基于史坦福(Stanford)模型和保有量系数法对我国电子废物产生量的预测,并与中国家电以旧换新活动试点区域的实际回收统计数据进行对比,结果显示除电视机以外,两种估计方法的预测结果都显著高于以旧换新的实际回收数据.其原因首先是产品废弃量的变化深受产品技术变化影响,平板显示技术的快速普及导致CRT电视机废弃量出现短期激增,成为“家电以旧换新”实际回收品的主体,而洗衣机、电冰箱等传统大家电的产品实际使用寿命相对较长;其次是废旧产品回收面临非正式回收部门的竞争,以旧换新以较高的政府补贴引导一定数量的废弃产品流向正规处理企业,但还有相当数量的废旧产品流入了非正式的翻新加工和二手销售渠道.特别是空调和电脑,家庭消费占总消费量的比重较小,产品废弃后的材料回收价值和翻新维修价值都较高,补贴对提升回收量的影响相对较小;最后不同区域之间,预测结果与实际回收情况对比也存在明显的差别.考虑到家电以旧挟新政策停止以后,新颁布实施的废弃电器电子产品回收处理基金的补助力度大幅下降,有资质的回收处理企业重新陷入发展困境.有必要遵循生产者责任延伸制度的原则,积极鼓励扩大生产者的参与,从产品设计和废弃产品回收的逆向物流两方面提高回收利用系统的效率.同时,合理规划再生处理设施的区位和处理规模,需要根据区域和产品特点,对现有预测方法进行优化调整.     

战略性新兴产业开放式创新模式研究——基于文献分析

本文通过对战略性新兴产业的产业特性分析,认为战略性新兴产业要实现稳步快速发展,就要进行开放式创新.然后,本文提出衡量产业开放式创新模式的3个维度:伙伴类型开放度、创新阶段开放度和R&D战略开放度.通过对国内外开放式创新及战略性新兴产业创新文献的梳理归纳,本文总结出备战略性新兴产业在3个堆度的具体表现,以及战略性新兴产业整体开放式创新模式.最后,提出相关政策建议.     

组织间关系与创新绩效的前沿探析与趋势展望

本文从特定组织模式以及要素特征两个研究视角对组织间关系与创新绩效相关研究进行了回顾和梳理,针对相关研究内容和研究方法进行了评述,并从上述两个方面对未来研究趋势进行展望,基于此,提出组织间关系与创新绩效研究的概念模型与实证构想,研究设计更为关注组织间关系的动态性、演进性和周期性,侧重阐释组织间关系的全生命周期演进及其与创新绩效的多层次交互作用机理.     

基于自适应模糊PID控制的中央空调冷冻水系统仿真研究

定风量空调系统的调节是通过调节冷冻水流量实现的,建立了各个部件的数学模型,通过调节水泵转速来调节冷冻水流量。由于空调系统参数的时变性,常规PID控制存在局限性,本文建立自适应模糊PID控制器,并与常规PID控制器进行比较,表明自适应模糊PID控制调节效果更好,简单易行。     

推行标准化发展模式 全力助推西部大庆建设

阐述了中国石油长庆油田分公司以技术标准为支撑,应用标准化原理,在管理层面、操作层面、建设层面大力推进标准化模式,全方位创新标准化管理方式、方法,拓展了标准化工作的覆盖面,创建最佳标准化实践的经验和做法。推行标准化发展模式,有效解决了快速发展中的管理瓶颈,提高了油气田开发建设效率和质量。     

刍议民事案件缺席审判之规范——从程序与实体的维度出发

民事案件缺席审判是弥补一方缺席而导致的非常态化审理模式的有益补充。缺席审判的功能在于保障审判权正常行使,实现诉讼制度所追求的公正与效益两大价值内核。现阶段,缺席审判遭遇诸多困境,制约了缺席审判制度功效之发挥。实践中,需进一步规范民事案件缺席审判,从程序与实体方面人手,确保缺席审判的正当性、公正性、高效性,实现法律效果与社会效果的统一。     

Conceptualizing Destination Brand Equity Dimensions from a Consumer-Based Brand Equity Perspective

This study develops a conceptual framework for destination brand equity that goes beyond image by adapting and expanding a multidimensional consumer-based brand equity scale for application within a tourism context. The empirical results, based on a consumer survey in Malaysia (n?=?326) measuring the brand dimensions of Korea, identify the relational linkages between four principle brand equity dimensions (brand awareness, brand image, brand associations, and brand loyalty), and overall customer-based brand equity. The importance of brand image, associations, and awareness is confirmed, and the mediating role of brand loyalty in building destination brand equity is highlighted.     

Tour Guide Management in Hainan,China: Problems,Implications and Solutions

There have been few efforts made to identify the positioning of exhibition host countries or cities, even though studies on the positioning of convention host destinations have been popular. Thus, the aim of this study was to assess the positioning of exhibition cities as perceived by a sample of exhibitors who participated in exhibitions held in Hong Kong. A total of 304 questionnaires were collected at the PATA Travel Mart 2006, the Hong Kong Jewelry and Watch Fair, Aircraft Interiors Expo ASIA 2006, MIPIM Asia 2006, and Electronic Asia 2006. The results of this study found that there is a strong competition between major exhibition host cities in Asia, including Hong Kong, Beijing, Shanghai, Singapore, Seoul and Tokyo. The respondents showed the highest preference for Hong Kong and Singapore as an exhibition host destination.     

Cave Tourism: Tourists' Characteristics,Motivations to Visit,and the Segmentation of Their Behavior

Geotourism is one among many types of ecotourism or nature tourism. Cave tourism within geotourism has gained popularity in Korea. The study's objectives include cave tourists' characteristics, segmenting them according to motivation factors, and finally identifying who they are. The sample population for this research consisted of tourists who have visited the Hwansun Cave in Samchuk City. Among a total of 547 questionnaires distributed, 537 questionnaires were used for further data analyses. On the basis of cluster analysis using the motivation factors, cluster 1 was named an “escape-seeking group”, cluster 2 was termed a “knowledge- and novelty-seeking group”, cluster 3 was called a “novelty-seeking group” and cluster 4 was termed a “socialization group”. Differences in socio-demographic variables, beliefs about cave tourism resources, preferred cave tourism products, satisfaction with this tour, willingness to participate in another cave tour and belief in the value of cave tourism resources were found among the four clusters. The study's findings were expected to be helpful in understanding who they are.