全文获取类型
收费全文 | 460篇 |
免费 | 8篇 |
国内免费 | 72篇 |
专业分类
电工技术 | 2篇 |
综合类 | 13篇 |
化学工业 | 1篇 |
金属工艺 | 2篇 |
机械仪表 | 11篇 |
建筑科学 | 2篇 |
矿业工程 | 1篇 |
轻工业 | 1篇 |
水利工程 | 2篇 |
武器工业 | 3篇 |
无线电 | 35篇 |
一般工业技术 | 1篇 |
原子能技术 | 2篇 |
自动化技术 | 464篇 |
出版年
2022年 | 2篇 |
2020年 | 1篇 |
2018年 | 4篇 |
2017年 | 8篇 |
2016年 | 3篇 |
2015年 | 12篇 |
2014年 | 11篇 |
2013年 | 11篇 |
2012年 | 21篇 |
2011年 | 34篇 |
2010年 | 24篇 |
2009年 | 15篇 |
2008年 | 42篇 |
2007年 | 56篇 |
2006年 | 48篇 |
2005年 | 57篇 |
2004年 | 53篇 |
2003年 | 60篇 |
2002年 | 38篇 |
2001年 | 15篇 |
2000年 | 10篇 |
1999年 | 5篇 |
1998年 | 4篇 |
1997年 | 4篇 |
1995年 | 1篇 |
1986年 | 1篇 |
排序方式: 共有540条查询结果,搜索用时 0 毫秒
51.
Several researchers have identified the need to count on presence awareness in ubiquitous systems that support mobile activities, particularly when these systems are used to perform loosely-coupled mobile work. In such a work style, mobile users conduct face-to-face on-demand interactions, therefore counting on awareness information about the position and availability of potential collaborators becomes mandatory for these applications. Most proposed solutions that provide user presence awareness involve centralized components, have reusability limitations, or simply address a part of that service. This article presents a lightweight and fully distributed middleware named Moware, which allows developers to embed presence awareness services in mobile ubiquitous systems in a simple way. The article also describes the Moware architecture, its main components and strategies used to deal with several aspects of the presence awareness support. These design strategies can be reused by software designers to provide presence awareness capabilities into middleware and specific software applications. Moware services were embedded in a mobile ubiquitous system that supports inspectors during the construction inspection process. The preliminary results indicate that the middleware was easy to use for developers, and its services were useful for the end-users. 相似文献
52.
基于XML的数据库信息动态发布技术 总被引:7,自引:2,他引:7
随着网络信息的大量涌现和广泛应用,原来简单的信息发布技术已经不能满足必须的信息交流与共享,当前对网上信息的处理(如信息搜索)主要是针对HTMLWeb页文档,而并没有深入到数据库中。XML的出现似乎为上述问题的解决提供了转机。文章介绍了一种实现关系数据库和XML文档之间数据转换以及最终发布的集成方案,为信息交互、检索等应用提供了技术基础。 相似文献
53.
结合金融支付信息化发展的实际情况,分析了金融支付系统对消息通信的需求,提出了基于Java消息服务JMS技术的解决方案,并利用Spring框架基于JMS实现了遗留系统间的通信。 相似文献
54.
Sergio Martin Gabriel Diaz Inmaculada Plaza Elena Ruiz Manuel Castro Juan PeireAuthor vitae 《Journal of Systems and Software》2011,84(11):1883-1891
The emergence of mobile and ubiquitous technologies as important tools to complement formal learning has been accompanied by a growing interest in their educational benefits and applications. Mobile devices can be used to promote learning anywhere and anytime, to foster social learning and knowledge sharing, or to visualize augmented reality applications for learning purposes. However, the development of these applications is difficult for many researchers because it requires understanding many different protocols; dealing with distributed schemas, processes, platforms, and services; learning new programming languages; and interacting with different hardware sensors and drivers. For that reason, the use of frameworks and middleware that encapsulate part of this complexity appears to be fundamental to the further development of mobile learning projects. This study analyzes the state of the art of frameworks and middleware devoted to simplifying the development of mobile and ubiquitous learning applications. The results can be useful to many researchers involved in the development of projects using these technologies by providing an overview of the features implemented in each of these frameworks. 相似文献
55.
56.
57.
58.
With the advent of cloud computing, employing various cloud services to build highly reliable cloud applications has become increasingly popular. The trustworthiness of cloud services is a critical issue that hinders the development of cloud applications, and thus is an urgently-required research problem. Previous studies evaluate trustworthiness of services via either QoS monitoring mechanisms or user feedback ratings, while seldom they combine both of them for enhancing service trust evaluation. This paper proposes a trustworthy selection framework for cloud service selection, named TRUSS. Aiming at developing an effective trust evaluation middleware for TRUSS, we propose an integrated trust evaluation method via combining objective trust assessment and subjective trust assessment. The objective trust assessment is based on QoS monitoring, while the subjective trust assessment is based on user feedback ratings. Experiments conducted using a synthesized dataset show that our proposed method significantly outperforms the other trust and reputation methods. 相似文献
59.
The material flow is a major focus point in improving productivity in today’s product diversified manufacturing organizations. Nevertheless, there is still a lack of efficient methods to control material flow through manufacturing processes in cases where multi-item tracking is difficult to achieve. This paper presents an RFID-based RTLS (Real-Time Location System) solution for obtaining multi-item work-in-process visibility within a manufacturer. It delivers detailed performance metrics through RTLS data analysis in order to evaluate workflow performance and to obtain a lean process. We pre-filter the RTLS data through the development of a middleware data collection method to acquire near real-time performance evaluation. A case study illustrates the complete process including measurements before and after a workflow redesign. The increased level of detail from RFID measurements yields new insights into shop floor actions and the real effects of redesign efforts. 相似文献
60.
为了适应移动定位应用对位置信息千差万别的要求,方便移动定位应用的开发,屏蔽各种具体定位系统的实现细节,我们设计并初步实现了面向对象的移动定位支撑平台MLSP。文章重点讨论了MLSP中的定位逻辑模型、定位信息模型及位置信息融合等问题。 相似文献