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991.
Four principles are identified that account for most delusion formation. The most important of these is transference--transference to the world at large. The second is the defense against pseudohomosexual impulses as described by Freud (and generally misunderstood). The third is the learning within the family of bizarre meanings of concepts which are assumed erroneously to be the meanings other people use. The fourth is the need to have a more or less consistent understanding of one's life and experiences. Therapeutic implications are drawn. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
992.
In this paper, a new multimedia joint encryption and fingerprinting (JEF) scheme embedded into the advanced access content system (AACS) is proposed for multimedia transmission over networks. AACS is selected because it has been jointly developed by many famous companies and has been considered as the leading technology in content access control and multimedia distribution. In this framework, many attack points exist and can be exploited to defeat it. Furthermore, multiple attack points can be combined to form multi-point collusion attacks, which also endanger the proposed system. In this paper, we address the security concerns toward AACS-compatible JEF system in its entirety and propose solutions to cope with some security threats. The contributions of this paper include: (i) applying multimedia encryption at different points to resist some attacks points; (ii) proposing rewritable fingerprint embedding (RFE) to deal with some multi-point collusion attacks; (iii) designing a perceptual security spectrum metric (PSSM) to evaluate the degree of security when multiple encryptions are applied. The feasibility of the proposed AACS-compatible JEF method is further demonstrated through simulation results. 相似文献
993.
论述了湖北省缺电是由于能源(煤、石油、天然气等)短缺造成的,而核电是安全、环保、经济的能源,要扭转湖北能源紧张的局面,必须加快核电站建设。 相似文献
994.
We give a careful, fixed-size parameter analysis of a standard (Blum and Micali in SIAM J. Comput. 13(4):850–864, 1984; Goldreich and Levin in Proceedings of 21st ACM Symposium on Theory of Computing, pp. 25–32, 1989) way to form a pseudo-random generator from a one-way function and then pseudo-random functions from said generator (Goldreich
et al. in J. Assoc. Comput. Mach. 33(4):792–807, 1986) While the analysis is done in the model of exact security, we improve known bounds also asymptotically when many bits are
output each round and we find all auxiliary parameters efficiently, giving a uniform result. These optimizations makes the
analysis effective even for security parameters/key-sizes supported by typical block ciphers and hash functions. This enables
us to construct very practical pseudo-random generators with strong properties based on plausible assumptions. 相似文献
995.
通过分析施工安全工作的现状,介绍了施工安全的必要性,从理论和技术方面提出了整改意见和加强措施,对确保施工安全和提高施工效益有指导和借鉴作用。 相似文献
996.
997.
Ruiz Mark A.; Drake Evan B.; Glass Aviva; Marcotte David; van Gorp Wilfred G. 《Canadian Metallurgical Quarterly》2002,33(3):294
Although the Internet may be beneficial to clinical practice, its potential for misuse cannot be overlooked. The current probe identified Internet Web sites that contained information that violated the test security of psychological assessment instruments. Five individuals, using multiple search engines, conducted Internet searches to evaluate samples of Web sites. Sites were classified into 1 of 3 levels according to the degree of threat they posed to test security. A small number (2-5%) appeared to be a direct threat to test security. The findings are discussed and recommendations for promoting more ethical use of the Internet are made. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
998.
Risk assessment of water security in Haihe River Basin during drought periods based on D-S evidence theory 总被引:1,自引:0,他引:1
Qian-jin DONG Xia LIU 《水科学与水工程》2014,7(2):119-132
The weights of the drought risk index (DRI), which linearly combines the reliability, resiliency, and vulnerability, are difficult to obtain due to complexities in water security during drought periods. Therefore, drought entropy was used to determine the weights of the three critical indices. Conventional simulation results regarding the risk load of water security during drought periods were often regarded as precise. However, neither the simulation process nor the DRI gives any consideration to uncertainties in drought events. Therefore, the Dempster-Shafer (D-S) evidence theory and the evidential reasoning algorithm were introduced, and the DRI values were calculated with consideration of uncertainties of the three indices. The drought entropy and evidential reasoning algorithm were used in a case study of the Haihe River Basin to assess water security risks during drought periods. The results of the new DRI values in two scenarios were compared and analyzed. It is shown that the values of the DRI in the D-S evidence algorithm increase slightly from the original results of Zhang et al. (2005), and the results of risk assessment of water security during drought periods are reasonable according to the situation in the study area. This study can serve as a reference for further practical application and planning in the Haihe River Basin, and other relevant or similar studies. 相似文献
999.
某工程混凝土结构裂缝事故分析与处理 总被引:1,自引:1,他引:0
近几年来,混凝土结构的持量问题普遍表现为裂缝问题,且有日趋增多的趋势,已严重影响了正常的工作和生产。本文介绍了某建筑物梁开裂的认识,检测情况,原因分析和处理情况,并由此对加强工程制裁量管理,提出了建议。 相似文献
1000.