Báo cáo hóa học: " Time-Frequency Signal Synthesis and Its Application in Multimedia Watermark Detection" potx

... unique properties and advantages of watermarking in joint time- frequency domain. In [15], watermark insertion and extraction are both done in time-frequency domain. In the embedding process, watermark ... 10.1155/ASP/2006/86712 Time-Frequency Signal Synthesis and Its Application in Multimedia Watermark Detection Lam Le and Sridhar Krishnan Department of...

Ngày tải lên: 22/06/2014, 23:20

... the manuscript. XL, LS, and HL: conceived of the study, and participated in its design and coordination. All authors read and approved the final manuscript. Competing interests The authors declare ... potential applications in spin filtering, high density magnetic recording, and nanosensors. PACS: 61.46.Df; 75.50; 81.0 7.Vb; 81.07. Introduction In the last de cade, diverse t...

Ngày tải lên: 21/06/2014, 04:20

Ngày tải lên: 21/06/2014, 08:20

... Science and Engineering, Tsinghua University, Beijing 100084, People’s Republic of China 2 Astronaut Center of China, Beijing 100094, People’s Republic of China. 3 School of Materials Science and Engineering, ... [20] and magnetron sputtering [21,22] in TiO 2 , W and FeSiAl(Ti/Ta)(O)N thin films. Brien [23] has done a pioneering work o n the growth mechanism of the feather-like nano...

Ngày tải lên: 21/06/2014, 08:20

... pure nickel nanoparticles in the resins. With cycling, the satu- ration magnetization values are showing an increasing trend. It is the increase in metal loading after each cycling Fig. 5 The XRD patterns ... the composite is calculated and the percentage of nickel in the composite is found to be increasing with cycling and is shown in Fig. 7. For SAC16, the maximum loading of 21%...

Ngày tải lên: 21/06/2014, 18:20

... purposes) Findings Aberrant expression of cyclins, cyclin dependent kinases (CDKs) and their inhibitors has been observed in post mitotic neurons in Alzheimer's disease (AD) [1,2]. Pro- teins that ... observed in post mor- tem brain tissue correlate well with recent clinical data pre- sented by Combrinck and colleagues [21] describing, compared to control patients, higher prost...

Ngày tải lên: 19/06/2014, 22:20

... part in the signaling of neuroprotective effects in the brain [63]. In this study, we noted a distinct pattern of cytokine/chemokine expression in the brain, spleen, and serum of the HIV-1Tg and ... Results: In the spleen, there was an increase in key pro-inflammatory (IL1α, IL-1β, IFN-γ) and anti- inflammatory (IL-10) cytokines, and inflammatory chemokines (Ccl2, Ccl7,...

Ngày tải lên: 19/06/2014, 22:20

... a growing interest in allergy research. Biblio- metric approaches in combination with density- equalizing mapping were used for this purpose. We hypothesized that the growing interest in allergy research ... density- equalizing mapping. Author details 1 Institute of Occupational Medicine, Charité-Universitätsmedizin Berlin, Free University Berlin and Humboldt-University Berlin, Berlin...

Ngày tải lên: 20/06/2014, 00:20

... have difficulty in performing coordinated movements against spasticity [1]. Performances of hand tasks in these patients require gross and fine hand motion coordinated with vis- ual perception and postural ... the thumb -in- palm deformity in cerebral palsy. J Bone Joint Surg 1981, 63(2):216-25. 4. Tonkin MA, Gschwind C: Surgery for cerebral palsy: Part 2. Flexion deformity of the w...

Ngày tải lên: 20/06/2014, 01:20

... pneumococcal vaccine. In 2004, 14,799 (34%) individuals received the influenza vaccine and 8,843 (21%) the pneumococcal vaccine and in 2005 16,926 (39%) individuals were given the influenza vaccine and 12,340 ... purposes) gation in 2003 of individuals vaccinated against influenza indicated that 35% belonged to a medical risk category defined as chronic lung and/ or heart disease...

Ngày tải lên: 20/06/2014, 01:20