全文获取类型
收费全文 | 142篇 |
免费 | 5篇 |
国内免费 | 3篇 |
专业分类
电工技术 | 2篇 |
综合类 | 1篇 |
金属工艺 | 37篇 |
机械仪表 | 17篇 |
建筑科学 | 18篇 |
能源动力 | 17篇 |
轻工业 | 1篇 |
石油天然气 | 1篇 |
无线电 | 4篇 |
一般工业技术 | 4篇 |
原子能技术 | 1篇 |
自动化技术 | 47篇 |
出版年
2024年 | 1篇 |
2023年 | 2篇 |
2021年 | 2篇 |
2020年 | 4篇 |
2019年 | 5篇 |
2018年 | 3篇 |
2017年 | 1篇 |
2016年 | 3篇 |
2015年 | 2篇 |
2014年 | 11篇 |
2013年 | 12篇 |
2012年 | 7篇 |
2011年 | 10篇 |
2010年 | 16篇 |
2009年 | 11篇 |
2008年 | 10篇 |
2007年 | 12篇 |
2006年 | 7篇 |
2005年 | 12篇 |
2004年 | 7篇 |
2003年 | 6篇 |
2002年 | 3篇 |
2001年 | 1篇 |
2000年 | 1篇 |
1999年 | 1篇 |
排序方式: 共有150条查询结果,搜索用时 31 毫秒
1.
While reuse is an effective lifecycle option in terms of reduction of environmental loads and value of reutilization, reuse has inherent difficulties. Our naive question is why component reuse of home appliances seems impossible while that of photocopiers succeeded. This paper clarifies an essential factor for successful reuse; that is, the balance between supply and demand of reusables, and proposes an index named ‘marginal reuse rate,’ which indicates upper limit of reusability. By using this index, reusability of several products is analyzed. The marginal reuse rate indicates that design of lifecycle, in addition to product design, is indispensable for successful reuse. 相似文献
2.
移动计算环境中带宽具有非对称性,并且移动设备资源有限,传统的缓存管理策略需要占用大量的设备计算资源和网络带宽,有效的缓存管理技术能够极大提高移动计算的性能。对此提出一系列的针对移动计算的缓存管理策略。首先根据用户访问频率建立对应的具有生命周期的数据项缓存,然后使用自适应一致性维护策略维护缓存的一致性。通过实验分析,提出的管理策略能够很好地降低带宽占用,并且有效地减少对移动客户端的资源需求。 相似文献
3.
Radio Frequency Identification (RFID) based systems have been used in different applications in the Architecture, Engineering, Construction, Owner and Operator (AECOO) industry. Applications are mainly designed for specific lifecycle stage of the facility and serve the needs of only one of the stakeholders. This would increase the cost and the labor for adding and removing tags and eliminate the chance of using shared resources. In this paper, the usage of tags permanently attached to components is proposed where the memory of the tags is used during the lifecycle by different stakeholders for data storage and handover. A Building Information Model (BIM) database is used for tackling the interoperability issues allowing different users to access and share the data. To securely and efficiently store data on RFID tags in ifcXML format, multi-level encryption together with role-based access control is applied on the data stored on RFID tags. Each user is assigned a certain role and can only access the part of data for which he has authorization according to a predefined role and the Access Control Policy. To explore the technical feasibility of the proposed approach, a case study considering both facilities management and emergency management has been implemented and tested at Concordia University. 相似文献
4.
资源管理是云计算中最重要的一部分。介绍了基于现有云银行模型的云银行生命周期,并提出了合适的定价策略。它根据不同时期云银行的特点得出不同的定价策略。本文的目的是提供一个自动更新机制来定价云资源,从而最大化所有参与者的利益。 相似文献
5.
Ariel Sabiguero Anthony Baire César Viho 《International Journal on Software Tools for Technology Transfer (STTT)》2008,10(4):337-346
TTCN-3 is an abstract language for specification of Abstract Test Suites. Coding of TTCN-3 values into physically transmittable
messages and decoding of bitstrings into their TTCN-3 representation has been removed from the language itself and relayed
to external and specialized components, called CoDec. CoDec development, either implicitly or explicitly, is a must in any
TTCN-3 testing activity. Field experience showed that there is a high cost associated with CoDec development and maintenance.
To achieve adequate software engineering practices, a set of types, tools and definitions were developed. This paper unveils
gray areas in TTCN-3 architecture and presents a methodological approach to minimize the complexity of CoDec development.
Even though the initial field of application is IPv6 testing, the main tool introduced—the CoDec Generator—is a valuable tool
in any testing application domain. It is designed to lower the CoDec maintenance costs in all test case lifecycle stages,
from development to maintenance.
This work has been partly supported by the IST Go4IT European project: . 相似文献
6.
7.
Sustainable business design has gained growing interest in recent years. However, it is often difficult to clarify which business activities actually contribute to (or violate) the sustainability of the earth due to high complexity of environmental and economical system of our society. In order to help a business to generate sustainable business ideas handling this complexity in a systematic and comprehensive manner, this paper proposes a method to formulate a wide variety of causalities in our society into a cause–effect pattern library and illustrates how to use it for design and planning of sustainable businesses. 相似文献
8.
9.
10.
Carbon footprint as environmental performance indicator for the manufacturing industry 总被引:1,自引:0,他引:1
A. Laurent 《CIRP Annals》2010,59(1):37-40
With the current focus on our climate change impacts, the embodied CO2 emission or “Carbon footprint” is often used as an environmental performance indicator for our products or production activities. The ability of carbon footprint to represent other types of impact like human toxicity, and hence the overall environmental impact is investigated based on life cycle assessments of several materials of major relevance to manufacturing industries. The dependence of the carbon footprint on the assumed scenarios for generation of thermal and electrical energy in the life cycle of the materials is analyzed, and the appropriateness of carbon footprint as an overall indicator of the environmental performance is discussed. 相似文献