全文获取类型
收费全文 | 350篇 |
免费 | 5篇 |
国内免费 | 4篇 |
专业分类
化学 | 112篇 |
力学 | 3篇 |
综合类 | 4篇 |
数学 | 8篇 |
物理学 | 18篇 |
无线电 | 214篇 |
出版年
2022年 | 3篇 |
2020年 | 6篇 |
2019年 | 2篇 |
2018年 | 5篇 |
2017年 | 8篇 |
2016年 | 5篇 |
2015年 | 5篇 |
2014年 | 8篇 |
2013年 | 13篇 |
2012年 | 8篇 |
2011年 | 24篇 |
2010年 | 22篇 |
2009年 | 28篇 |
2008年 | 28篇 |
2007年 | 27篇 |
2006年 | 49篇 |
2005年 | 21篇 |
2004年 | 18篇 |
2003年 | 18篇 |
2002年 | 16篇 |
2001年 | 6篇 |
2000年 | 8篇 |
1999年 | 4篇 |
1998年 | 5篇 |
1997年 | 7篇 |
1996年 | 8篇 |
1995年 | 1篇 |
1987年 | 1篇 |
1982年 | 1篇 |
1980年 | 1篇 |
1975年 | 1篇 |
1974年 | 1篇 |
1973年 | 1篇 |
排序方式: 共有359条查询结果,搜索用时 15 毫秒
21.
冯源 《电子产品可靠性与环境试验》2007,25(3):42-45
指出了企业在实施ISO 14001:2004过程中可能存在的问题,并针对固体废物管理、MSDS编写、文件之间不一致、轻污染企业的误区等问题给出了相应的解决方法. 相似文献
22.
The oxygen permeability of films is relevant for packaging related and technical applications. An increasingly used test method for the measurement of oxygen permeability is the optical test method, because it allows a simple and cost-efficient measurement setup. This method is based on optical chemical sensors. However, not much is known about its validity. Therefore, method validation is necessary which is subject of this study. The optical method is compared with the carrier gas method for a variety of film samples. In the tested permeability range of 0.5–2500 cm3 (STP)·(m2 d bar)−1 both methods deviated less than 20% for zero and 50% relative humidity. 相似文献
23.
24.
结合首钢实施ERP的经验,从理论层面和应用层面阐述了企业标准化与信息化之间的内在联系以及对企业管理的作用。 相似文献
26.
刘玲 《信息技术与标准化》2007,(6):37-41
通过分析ISO 9001:2000与CMM的相互关系,论述了二者之间的相关性和互补性,并对二者有机结合的理论基础进行了阐述,最后对ISO 9001和CMM在以软件开发为主要业务的组织中的协调实施进行了探讨. 相似文献
27.
随着信息化的持续推进,电网企业的信息安全问题越来越突出。嘉兴电力继2004年引入ITIL服务管理以后,2006年又实现了信息安全的标准化管理,介绍了公司通过引入ISO/IEC 27001:2005,建立一体化的企业级信息安全管理体系的方法。 相似文献
28.
The paper demonstrates conceptual parallels and relationships between intellectual capital measurement methods and the evaluation
of quality in clinical laboratories in the Slovak Republic. It explores further the contextual links of those parallels with
the tangibility (or intangibility) of quality indicators of laboratory diagnostics. It also highlights the problems which
laboratory staff in Slovakia are confronted with.
Presented at the conference Quality in the Spotlight, March 2007, Antwerp, Belgium. 相似文献
29.
以射频识别技术的实际应用为背景,采用TI公司生产的多协议收发器芯片S6700,结合PIC16F877 MCU和功率放大模块设计远距离阅读器。其中,对射频识别采用的ISO15693协议进行了详细说明并给出了具体实现代码。实践表明,在后级加上功率放大模块,能大大提高阅读距离,在车辆识别,停车收费等领域有较高的应用价值。 相似文献
30.
Management review of the quality-management system is an item in many quality standards and a requirement of the ISO 9001:2000
standard and of laboratory standards ISO 15189 and ISO 17125, and others. These reviews are conducted to ensure that the top
management is informed and involved in the quality-management system with respect to continuing adequacy and effectiveness,
and opportunities for improvement of the system. The management review is a process that should be conducted and audited utilizing
the process approach. A process approach is defined as “An activity using resources and managed in order to enable the transformation
of inputs into outputs” (ISO 9001:2000). All identified main processes in the quality system should be monitored through data
collection by appropriate methods, assuring that data are valid, representative, and adequate. For management review data
must be collected and presented in an accessible form so that processes can be evaluated according to objectives, goals, resources,
etc. On the basis of this information the laboratory management makes the necessary decisions and ensure that actions are
taken that improve the effectiveness of the quality-management system. As output from the management review process, there
should be evidence of decisions regarding: change of quality policy and objectives; plans and possible actions for improvements;
corrective actions as appropriate; increased customer satisfaction; and planning of resources needs. Identification of the
processes involved and using the process approach in the management review ensures the continual improvement of the quality
system.
Presented at the conference Quality in the Spotlight, March 2006, Antwerp, Belgium. 相似文献