thuật toán lsb least significant bit

... 2.2 Thuâât toán LSB ( Least Significant Bit) Phần sẽ trình bày thuật toán giấu tin ảnh bitmap 24 bit, giải thuật sẽ thay tuần tự từng bit thông điệp cần ẩn bằng bit có ý nghĩa nhất ... số bit để biểu diễn cho màu thường 24 bit, hoặc 32 bit Với ảnh 24 bit thành phần màu biểu diễn byte(8 bit) Nguyễn Hồng Hải-CNPMK5 Giấu Tin Trong Ảnh Hình 5: ví dụ ảnh màu Ảnh bitmap ... Infor->Palette Table>Data Ý nghĩa phần tệp ảnh bitmap -Bitmap Header: Mô tả thông tin chung tệp định dạng bitmap, độ lớn phần cố định với tệp bitmap -Bitmap Infor: Mô tả thông tin ảnh lưu trữ,...

Ngày tải lên: 03/04/2015, 11:03

... back pain to control subjects using various techniques All but two of these studies [39,40] found significantly decreased reposition sense error in the subjects with low back pain compared to controls ... be found in Figure The graphical analysis of the 20 trials suggests over-sampling The graph exhibits that during trials 1–7, performance plateaued, while during trials 8–20, reposition sense error ... repositioning error for group 4–7 was 2.26 degrees, the lowest value, while values for the other four non -significant groups ranged from 2.49 (trials 8–11), 2.98 (trials 15– Table 3: Paired Samples T-Test...

Ngày tải lên: 19/06/2014, 10:20

... ··· F T2 T3 · · · TN T1 1.6 Recently, Marino and Xu introduced a new iterative scheme from an arbitrary point x0 ∈ H by the viscosity approximation method as follows: xn n γf xn I− nA T xn , ∀n ... introduced a viscosity approximation method for finding a common element of EP G and F T from an arbitrary initial element x1 ∈ H y − un , un − xn ≥ 0, rn G un , y xn nf xn 1− n T un , ∀y ∈ C, 1.16 ... x ≥ 0, ∀y ∈ C , ri z ∈ C : Gi z, y x ∈ H, i ≥ 1.22 N ∞ Assume that Ω i EP Gi , Ai / ∅ For an arbitrary initial point x1 ∈ H, we i F Ti define the iterative scheme {xn } by n zn αn xn αi−1 − αi...

Ngày tải lên: 21/06/2014, 11:20

... research results, we introduce the following iterative process for finding an element in Ω: for an arbitrary initial point x1 ∈ H, zn xn αn xn n γ1 Tr1 xn γ2 Tr2 xn αi−1 − αi σn Ti xn ··· γm Trm xn ... {γi }i ⊂ 0, with m γi 1, r1 , r2 , , rm ∈ 0, ∞ , and {σn }n ⊂ a, b n i with < a, b < For an arbitrary initial x1 ∈ H, define the iterative sequence {xn } by zn xn αn γ1 Tr1 xn γ2 Tr2 xn − αn ... α < be a strictly decreasing sequence, {λn }∞ ⊂ 0, n n and {σn }∞ ⊂ a, b with < a, b < For an arbitrary initial x1 ∈ H, define the iterative sequence n {xn } by xn αn xn n αi−1 − αi σn Ti xn −...

Ngày tải lên: 21/06/2014, 11:20

... sequence {xn } defined by the iterative method below, with the initial guess x0 ∈ C is chosen arbitrarily: xn αn f xn 1 − αn Sxn , n ≥ 0, 1.4 where {αn } ⊂ 0, satisfies certain conditions, converges...

Ngày tải lên: 22/06/2014, 02:20

... the edge of the disk would be the main concerns For data storage disk, the membrane stresses are significant due to the high rotating speed The effect of air flow and heat from the motor or induced ... speeds studied Fourier-Bessel series is used to express the forced deflection response due to arbitrarily moving concentrated load Damping and loading parameters are also studied RD-STL While ... Aerodynamic Adams (1987) obtained the critical speeds at which a spinning disk is unable to support arbitrary spatially fixed transverse loads He included a foundation parameter, which serves to account...

Ngày tải lên: 16/09/2015, 15:43

... terminating at Val40, Ab(1–42) and Ab(M1–42) are also at least 97% pure Together, these results confirm that our recombinant Ab(M1–40) and Ab(M1–42) are at least as pure as the synthetic peptides purified ... shown) At the three concentrations tested, inhibition of MTT by Ab(1–40) and Ab(M1– 40) was essentially identical; similarly, the degrees of inhibition caused by Ab(1–42) and Ab(M1–42) were indistinguishable ... concentration studied Moreover, the extent of MTT inhibition was not significantly different for peptides ending at residues 40 and 42, with approximately 50% inhibition at lm for all four peptides Longer-term...

Ngày tải lên: 18/02/2014, 13:20

... absolute garbage too – sites that had no relevance to her work or had bad information There were at least 20 programmes she wanted to contact to share ideas But where to start? Her time is precious...

Ngày tải lên: 22/02/2014, 01:20

... factor is often the one that determines if you can have an online community at all Online implies at least some Internet access You need to know if your intended members have access, or if some don’t, ... ministries of health, which factors might be most important Please order from most important to least important There will be up to 50 potential members of the community There are many different...

Ngày tải lên: 08/03/2014, 20:20

... Indicators: by country, estimates of total number of PCs per 100 inhabitants, estimates of the number of Internet users per 10,000 inhabitants Regional indicators available for Europe, Arab States and ... secure email is being challenged by national government policy, a citizen fed up with paying exorbitant rates for dial-up Internet access and ready to organize” • “ICT Policy for Civil Society”...

Ngày tải lên: 08/03/2014, 20:20

... Normal University, Kaohsiung 824, Taiwan Authors’ contributions Both authors contributed equally and significantly in writing this paper Both authors read and approved the final manuscript Competing...

Ngày tải lên: 21/06/2014, 01:20

... leads to significant increase in intracellular superoxide levels in NIH3T3 cells 58 Fig 10 DDC-mediated inhibition of cell death is dependent on NHE-1 gene expression 60 Fig 11 Inhibition of ... recently which are involved in the regulation of apoptosis IAPs (Inhibitor of apoptosis proteins) bind to caspases and inhibit their activity Another player with the Fig B Death-Receptor mediated ... GTPase Rac1 (Pervaiz S et al, 2001), or as a result of an inhibition of the O2.- scavenger Cu/Zn SOD (Pervaiz S et al, 1999), inhibits tumor cell apoptosis triggered by either the CD95 receptor...

Ngày tải lên: 16/09/2015, 08:31

... Urban Runoff Program (EPA, 1983) did not find significant differences among land uses, but studies accounting for regional differences did observe significant differences For example, Stenstrom ... uses and found significant differences in 21 different pollutants Others (Wong et al., 1997; Burian et al., 2002; Ackerman and Schiff, 2003; Goonetillekea, et al., 2005) also found significant differences ... Water and Environment Technology, Vol.3, No.2, 2005 as ground surveys, is time-consuming and prohibitively expensive Land use data based on ground surveys might not be available for some areas of...

Ngày tải lên: 05/09/2013, 09:08

... managers were significant (p < 05) Previousstudiesreport that demographic differencesin engagement are statistically non -significant, orthose differencesthat exist have been labeled as significant, ... generated at least 70% agreement were retained SMEs were also prompted to provide open-ended feedback Seventeen items met the initialretention criteria Two ofthese items were rated by at least one ... eliminated three items, the remaining nineitems were analyzed The fit ofthis nine-item model improved significantly (χ = 35.24, df = 27, ns; RMSEA = 03; TLI = 99; CFI = 1.00; GFI = 97) Scale alpha was.93...

Ngày tải lên: 07/09/2013, 11:05

... generating unit derated states have been considered Incorporation of these factors does not create a significant increase in computing time Sensitivity indices of both system and each area to area...

Ngày tải lên: 03/01/2014, 19:35

... with point intervals as initial conditions can be calculated over the grid {ti } with tL = T by arbitrary non- validated IVP solvers To apply the iteration scheme (7), analytical approximations...

Ngày tải lên: 12/01/2014, 22:04

... order of their value, i.e., such that 1 1 1 1 y4 ≤ y ≤ y ≤ y ≤ y ≤ y ≤ y ≤ y ≤ y then we must arbitrarily select a “quasi-projection” direction for each yt since there is no actual principal axis...

Ngày tải lên: 20/02/2014, 16:20

... some translation mistakes English words with multiple senses also tend to be wrongly translated at least in part (e.g., means) There is no difference between capital letters and small letters in...

Ngày tải lên: 20/02/2014, 22:20

Ngày tải lên: 22/02/2014, 01:20

... The industry will have to co-invest at least $16 billion to access all of the assistance foreshadowed in the plan We expect that investment to generate significant new employment opportunities ... our industry must either adapt to the new environment, or face extinction Adaptation will require significant investment in new technologies, new capabilities and new skills – investment that generates ... confidence and encouraging self-reliance That’s what we have set out to Adaptation will require significant investment in new technologies, new capabilities and new skills – investment that generates...

Ngày tải lên: 07/03/2014, 11:20