童亭矿锚杆支护安全可靠性控制

简要介绍了煤巷锚杆支护技术在童亭煤矿的应用推广情况 ,重点介绍了童亭煤矿在安全可靠性控制方面强化管理、优化设计、提高工艺水平和质量保证体系建设的一些经验和做法 ,并对今后发展煤巷锚杆支护技术提出了看法。     

基于一维测量的多传感器多目标数据关联

本文在S-D分配算法的基础上,提出一种基于一维测量数据的多基地雷达多目标数据关联的方法.在每个传感器仅能给出目标的一维距离和量测信息,并且同时存在虚警的条件下,该方法首先利用4维组合的冗余信息对各传感器的量测值进行组合筛选,然后由4维分配算法进行多目标的数据关联,仿真结果表明该方法可以有效提高多目标的正确关联概率.     

六种子目录加密法

本文介绍了六种子目录加密法，这些方法在作者的工作中经过检验证明是行之有效和简单易行的。文中对这些加密法进行了比较并给出了一些实施细节。     

Perceptually Grounded Language Learning: Part 2—DETE: A Neural/Procedural Model

In Part 1 of this two-part series, we introduced Katamic memory—a neural network architecture capable of robust sequence learning and recognition. In Part 2, we introduce the Blobs World taskjdomain for language learning and describe the DETE language learning system, which is composed of over 50 Katamic memory modules. DETE currently learns small subsets of English and Spanish via association with perceptual! motor inputs. In addition to Kaiamic memory, DETE employs several other novel features: (1) use of feature planes, to encode visual shapes, spatial relationships and the motions of objects, (2) phase-locking of neural firing, in order to represent focus of atention and to bind objects across multiple feature planes, and (3) a method for encoding temporal relationships, so that DETE can learn utterances involving the immediate past and future. We compare DETE to related models and discuss the implications of this approach for language-learning research.     

网络安全技术研究

网络安全问题已经成为网络发展中急需解决的问题。已经引起人们的重视。给出了网络安全的概念，网络所面临的威胁，提出了解决网络安全的相关技术。     

How to protect exchanged secrets in the fair exchange protocol with off-line TTP

The most efficient approach to a fair exchange is to use an off-line trusted third party (TTP for short) who gets involved only when a dispute between two parties occurs. However, exchanged secrets that are not protected properly may be exposed to the TTP when one of these two parties asks the TTP to mediate the dispute. The first work to protect exchanged secrets from TTP’s misuse was proposed by Franklin and Reiter in 1997. They provided an on-line semi-trusted third party instead of an off-line third party for a fair exchange. Their schemes forced the TTP to take part in the protocol for all the cases, and thus, deemed to be impractical.The present paper, introduces several models, including single and multiple TTPs, to focus the attention not only on security properties, but also on reliability functions. In the single TTP mode, our new scheme can protect the exchanged data through an efficient exchange protocol, whereas in the multiple TTP mode, we proposed an approach to balance the security level with the reliability of the system.     

Electronic Emissions Security: Danger in the Air

Most organizations have measures to protect their network infrastructure from intruders. With the growth AND AVAILABILITY of wireless, some intruders now are aiming their attacks there. The potential for damage from these types of attacks is significant due to their nature. However, there is another type of wireless attack on organizational resources that also poses a significant vulnerability. That is electromagnetic radiation, also called radio frequency emissions (RFE), from unprotected systems and networks.     

Hacking into the Minds of Hackers

This study presents results of a survey of self-proclaimed computer hackers about their perceptions in regards to illegal hacking. Results show that hackers continue to engage in illegal hacking activities despite the perception of severe judicial punishment. A closer look shows that hackers perceive a high utility value from hacking, little informal sanctions, and a low likelihood of punishment. These perceptions coupled with a high level of moral disengagement partially explain the hacker's illegal behavior.     

Local and global deadlock-detection in component-based systems are NP-hard

Interaction systems are a formal model for component-based systems. Combining components via connectors to form more complex systems may give rise to deadlock situations. We present here a polynomial time reduction from 3-SAT to the question whether an interaction system contains deadlocks.