phương hướng phát triển của công ty xuất nhập khẩu và hợp tác quốc tế trong thời gian tới
PERFECTIONNEMENT DE COMMUNICATIONS SECURISEES AGT EN UTILISANT LA CRYPTOGRAPHIE QUANTIQUE
Ngày tải lên :
27/10/2016, 23:16
... cryptographic security That means that the security relies on the assumed difficulty of some mathematical problems On the other side, Quantum Cryptography (QC) provides unconditional security relying ... Lỹtkenhaus, and Dominic Mayers "Unconditional Security of Practical Quantum Key Distribution" Juillet 2001 [12] Hoi-Kwong Lo "Communication Complexity and Security of Quantum Key Distribution" Avril 2004 ... provides unconditional security relying on the quantum physics law Such a security called information theoretic security because it is proved using the theory of information In this work, we study...
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Bài giảng Chapter 7 The Quantum-Mechanical Model of the Atom
Ngày tải lên :
28/11/2013, 01:11
... was inversely proportional to its mass x = position, ∆x = uncertainty in position v = velocity, ∆v = uncertainty in velocity m = mass • the means that the more accurately you know the position ... wavelength for electrons to be emitted called the threshold frequency regardless of the intensity • it was also observed that high frequency light with a dim source caused electron emission without ... directly proportional to its frequency inversely proportional to it wavelength the proportionality constant is called Planck’s Constant, (h) and has the value 6.626 x 10-34 J∙s h•c E = hν = λ...
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Tài liệu THE QUANTUM IN CHEMISTRY: An Experimentalist’s View pptx
Ngày tải lên :
15/02/2014, 17:20
... Probability Distribution for Molecular States 1039 25.1 The Quantum Statistical Mechanics of a Simple Model System 1040 25.2 The Probability Distribution for a Dilute Gas 1047 25.3 The Probability ... The isothermal compressibility κT is defined by κT − ∂V V ∂P (definition of the isothermal compressibility) (1.2-14) The factor 1/V is included so that the compressibility is an intensive variable ... Some authors call Z the compressibility factor We avoid this name because it might be confused with the compressibility The compression factor equals unity for an ideal gas Figure 1.3 shows a...
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Tài liệu Đề tài " Asymptotic faithfulness of the quantum SU(n) representations of the mapping class groups " pdf
Ngày tải lên :
16/02/2014, 05:20
... identity on M Proof of Theorem Our main Theorem now follows directly from Theorem 7, since it is known that the only element of Γ, which acts by the identity on the moduli space M is the identity, ... by the identity on M , it will also act by the identity on an open neighbourhood of M in M, since it acts holomorphically on M But since M is connected, φ must act by the identity on the entire ... (φ))| ≤ dim ρk (1) Assuming unitarity Theorem implies the following: Corollary Assume that n and d are coprime or that (n, d) = (2, 0) when g = Then equality holds in (1) for all k, if and only...
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The Quantum-Mechanical Model of the Atom pdf
Ngày tải lên :
09/03/2014, 00:20
... frequently—typically, 90% of z r y x Density of dots proportional to probability density (ψ2) Probability density (ψ2) 1s orbital Height of curve proportional to probability density (ψ2) r (a) ... Probability density (ψ2) Probability density (ψ2) Node r (100 pm) r (100 pm) 8 r (100 pm) 10 12 r (100 pm) 10 12 Total radial probability Total radial probability Nodes ▲ FIGURE 7.23 Probability Densities ... (c2), which represents probability density, the probability (per unit volume) of finding the electron at a point in space c2 = probability density = probability unit volume The magnitude of c2...
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Báo cáo "Quantum kinetic equation in the quantum hadrondynamics (QHD-I) model " pptx
Ngày tải lên :
22/03/2014, 11:20
... 24 (2008) 145-154 Formalism 2.1 The Quantum Hadrondynamics (QHD-I) We start with the Lagrangian density ¯ Lo =Ψ (iγ µ∂µ − M0 − gΦ − gω γ µVµ ) Ψ + µ 1 λ2 ∂ Φ∂µ Φ − m2 Φ − Φ4 + m2 V µVµ − Fµν Fµν ... scalar and vector fields Φ and Vµ respectively Φ ⇒ v + Φ; Vµ ⇒ δ0µ ωµ + Wµ , (3) the Lagrangian density (1) in the presence of external sources now takes the form ¯ L =Ψ (iγ µ∂µ − MN − gΦ − gω ... renormalized masses ω With the above definitions, the Lagrangian (4) can be rewritten as (we have suppressed the subscript r for notational simplicity) LQHD−I = LM F + LL + Lsource + LSB , (10) where...
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Đề tài " On the distribution of matrix elements for the quantum cat map " pptx
Ngày tải lên :
29/03/2014, 07:20
... that B ∈ C(2N ) preserves parity: nB ≡ n mod 2, so ε(nB) = ε(n)) Thus for ψ a Hecke eigenfunction, ˜ ε(m) TN (m)ψ, ψ = ε(n) TN (nB)ψ, ψ = ε(n) TN (n)ψ, ψ the last equality by (2.2) Define for ν ∈ ... representation is multiplicity free when restricted to C(2N ) (see Lemma in [9].) If N is split, then C(2N ) is isomorphic to (Z/N Z)∗ and the trivial character occurs with multiplicity one, the quadratic ... with multiplicity one, the quadratic character occurs with multiplicity two, and all other characters ˜ occur with multiplicity one (see [11, §4.1]) This explains the shape of D n1 x+n2 y As for...
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the quantum physics of black holes and string theory
Ngày tải lên :
18/04/2014, 15:30
... closed string theories thus contain gravity and are supersymmetric extensions of general relativity—supergravity However, unlike these local theories of gravity, which are not renormalizable, string ... theory is thus nonchiral There is another supergravity in ten dimensions, Type IIB supergravity This cannot be obtained from D=11 supergravity by dimensional reduction The bosonic fields of this ... theory have the same chirality Because of the self-duality constraint on the 5-form field strength, it is not possible to write down the action for Type IIB supergravity, although the equations...
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scientific american - 1993 04 - controlling the quantum jitters of atoms
Ngày tải lên :
12/05/2014, 14:49
... data reliability and comparability and of the short periods observed, current trends in morbidity and disability must be interpreted with caution T he dilemma we face as a society is that medical ... life is Þxed at about 85 years Better life-styles and advances in medical technology, he said, will merely compress mortality, morbidity and disability into a shorter period near that limit His ... human behavior and mortality In 1990 we took a more practical approach to the question of longevity Rather than predicting the lower limits to mortality, we asked what mortality schedules, or age-speciÞc...
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squires, the mystery of the quantum world (second edition)
Ngày tải lên :
05/06/2014, 11:21
... probability of a particle of that velocity passing through For low velocities the probability would be close to zero, and we would effectively be in the classical situation; as the velocity rose ... is known as the Heisenberg uncertainty principle Quantitatively, this principle states that the product of the position uncertainty and the velocity uncertainty is at least as large as a certain ... We can then write the uncertainty principle in the form U,U,> &/m (2.1) where U,is the uncertainty in the velocity and m is the mass of the particle I The quantity + is Planck’s constant We quote...
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Báo cáo hóa học: " Effects of Shape and Strain Distribution of Quantum Dots on Optical Transition in the Quantum Dot Infrared " doc
Ngày tải lên :
22/06/2014, 01:20
... difference in the FWHM implies the possibility that the second peak comes from wetting layer, but not from the bound levels of QDs So for the simplicity of comparing with the experimental results, ... responsivity of resonant tunneling and superlattice quantum dot infrared photodetectors using Green’s function J Appl Phys 102, 083108 (2007) V Ryzhii, V Mitin, M Stroscio, On the detectivity of ... inserted between the S-QD regions and bottom (top) Si-doped GaAs contact layers, respectively The typical constant-mode ambient atomic force microscopy (AFM) data and the cross-sectional TEM for...
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The Quantum Mechanics Solver 28 docx
Ngày tải lên :
02/07/2014, 07:20
... evolves slowly with time, the system will remain with a large probability in (t) (t) ˙ (t) ¯ the eigenstate |φn The validity condition for this theorem is h φm |φn (t) d ˙ (t) |Em (t) − En (t)| ... we derive the validity criterion for the adiabatic approximation in this particular case: h˙ ¯ U0 64 ER (d) For a linear variation of U0 such that U0 = ER t/τ , this validity condition is τ which ... In the frame with acceleration a and zero initial velocity, the coordinate of this point is x = x − at2 /2 In this frame, the laser intensity varies as sin2 (kx ), corresponding to a “true” standing...
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The Quantum Mechanics Solver 1 ppsx
Ngày tải lên :
02/07/2014, 07:20
... questions related to the measurability of the phase of the wave function Perhaps the most fundamental example is the experimental proof of the violation of Bell’s inequality, and the properties of entangled ... Coupling of the Field with an Atom 133 14.3 Interaction of the Atom with an “Empty” Cavity 134 14.4 Interaction of an Atom with a Quasi-Classical ... exactly soluble problems and related to known higher transcendental functions In the past ten or twenty years, things have changed radically The development of high technologies is a good example The...
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The Quantum Mechanics Solver 2 docx
Ngày tải lên :
02/07/2014, 07:20
... density operator ρ whose properties ˆ are the following: • The density operator is hermitian and its trace is equal to • All the eigenvalues Πn of the density operator are non-negative The density ... The quantity |ψ(r)|2 is the probability density to find the particle at point r in dimensional space Its Fourier transform ϕ(p): ϕ(p) = (2π¯ )3/2 h h e−ip·r/¯ ψ(r) d3 r is the probability amplitude ... measure a physical quantity A, and for the N others , we measure a physical quantity B The rms deviations ∆a and ∆b of the two series of measurements satisfy the inequality ∆a ∆b ≥ ˆ ˆ ψ|[A, B]|ψ...
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The Quantum Mechanics Solver 3 docx
Ngày tải lên :
02/07/2014, 07:20
... probability amplitude to find the system in another eigenstate |f at time t is: a(t) = i¯ h t h ˆ ei(Ef −Ei )t/¯ f |H1 (t )|i dt In the case of a time-independent perturbation H1 , the probability ... particle comes into play, this density of state must be multiplied by the number of possible spin states 2s + 1, where s is the spin of the particle The quantity L3 represents the normalization ... a continuum {|f } of eigenstates of H0 by the time-independent perturbation ˆ ˆ V For simplicity, we assume that the matrix elements f |V |i only depend on the energies Ef of the states |f ...
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- khảo sát chương trình đào tạo gắn với các giáo trình cụ thể
- xác định thời lượng học về mặt lí thuyết và thực tế
- tiến hành xây dựng chương trình đào tạo dành cho đối tượng không chuyên ngữ tại việt nam
- điều tra đối với đối tượng giảng viên và đối tượng quản lí
- điều tra với đối tượng sinh viên học tiếng nhật không chuyên ngữ1
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- khảo sát các chương trình đào tạo theo những bộ giáo trình tiêu biểu
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- xác định mức độ đáp ứng về văn hoá và chuyên môn trong ct
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