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دخلت الصين مرحلة جديدة من التطور خلال العقود الثلاثة، مع بدئها بتنفيذ سياسة الإصلاح والانفتاح، فاحتل اقتصادها في العام 2010 م، المرتبة الثانية لأكبر اقتصاد في العالم، نتيجة سنوات طويلة من العمل الشاق، لبناء دولة اشتراكية قوية، والترويج لحوكمة جديدة، إلى جانب التطور المتسارع لكل من العلوم والتكنولوجيا والتعليم، تحت قيادة الرئيس شي جين بينغ الحكيمة التي عكست وجهة نظره الثاقبة والمتمثلة في دمج النظرية بالممارسة لمواكبة الزمن. وبناء عليه، سيعالج هذا الكتاب أهم الخطوط العريضة التي قام عليها فكر شي جين بينغ في حوكمة الصين، وبناء دولة ابتكارية تعطي الأولوية لتطوير العلوم والتكنولوجيا والتعليم، وإغنائها بالمواهب الشابة، بهدف الحفاظ على استمرارية النهضة التي تشهدها الأمة الصينية حاليا، والشير أكثر فأكثر إلى الأمام.

Quantization is a widely adopted technique in model deployment as it offers a favorable trade-off between computational overhead and performance loss. Integer-arithmetic-only quantization is an important approach in quantization and holds great significance for hardware deployment with limited resources. However, existing methods represented by IAO face challenges when balancing hardware efficiency and accuracy. They suffer from significant accuracy loss and the multipliers in element-wise layers are not constrained to be power-of-2. These issues limit the utilization of hardware resources. In this paper, we explore integer-arithmetic-only quantization and introduce two techniques: re-quantization and re-scale. Our approach ensures that inference in an 8-bit quantized network involves only 8-bit multiply-accumulate operations and bit-shifting. We compare our method with previous integer-arithmetic-only approaches and demonstrate that our approach not only accelerates inference speed and reduces resource consumption but also achieves minimal performance degradation. For the commonly used ResNet-50, our int8 model exhibits only a 0.5% drop in Top-1 accuracy, significantly outperforming previous integer-arithmetic-only methods. Moreover, the proposed method frees up digital signal processing resources and improve parallelism, achieving an improvement of approximately 27% in frames per second and reducing inference time by 27.09 ms (19%). This showcases the practical value and effectiveness of our proposed method in improving the overall efficiency of model inference.

The anti-cancer properties of zinc oxide-doped carbon dots (CDs/ZnO) in inhibiting triple-negative breast cancer (TNBC) progression merit more investigation. With citric acid as the carbon source, urea applied as the nitrogen source, and zinc oxide (ZnO) used as a reactive dopant, CDs/ZnO were synthesized by microwave heating in the current study, followed by the characterization and biocompatibility assessments. Subsequently, the anti-cancer capabilities of CDs/ZnO against TNBC progression were evaluated by various biochemical and molecular techniques, including viability, proliferation, migration, invasion, adhesion, clonogenicity, cell cycle distribution, apoptosis, redox homeostasis, metabolome, and transcriptome assays of MDA-MB-231 cells. Additionally, the in vivo anti-cancer potentials of CDs/ZnO against TNBC progression were analyzed using TNBC xenograft mouse models. The biocompatibility of CDs/ZnO was supported by the non-significant changes in the pathological and physiological parameters in the CDs/ZnO treated mice, alongside a non-cytotoxic effect of CDs/ZnO on the proliferation of normal cells. Notably, the CDs/ZnO treatments effectively decreased the viability, proliferation, migration, invasion, adhesion, and clonogenicity of MDA-MB-231 cells. Furthermore, the CDs/ZnO treatments induced cell cycle arrest, apoptosis, redox imbalance, metabolome disturbances, and transcriptomic alterations of MDA-MB-231 cells by regulating the MAPK signaling pathway. Additionally, the CDs/ZnO treatments markedly suppressed the in vivo tumor growth in the TNBC xenograft mouse models. In this study, we synthesized CDs/ZnO via microwave heating, using citric acid as the carbon source, urea as the nitrogen source, and ZnO as a reactive dopant. We confirmed the biosafety and potent anti-cancer efficacy of CDs/ZnO in inhibiting TNBC progression by disrupting malignant cell behaviors through modulation of the MAPK signaling pathway.

An Mg-doped isotope lithium niobate (Mg:7LiNbO3) crystal was successfully grown from 7LiOH, Nb2O5, and MgO using the Crozchralski method. The weight of the as-grown crystal with good quality was about 40 g. The crystal structure was determined as an R3c space group using the X-ray powder diffraction (XRPD) method, and the crystal composition (Li%) determined using the Raman mode linewidth method was 49.29%. The average transmittance of the crystal in the range of 500–2500 nm was approximately 72%. Various thermal properties, including the specific heat (Cp), the thermal expansion coefficient (α), the thermal diffusion coefficient (λ), and the thermal conductivity (κ), were carefully determined and calculated, and the value divergences among Mg:7LiNbO3, the undoped isotope lithium niobate (7LiNbO3), and natural lithium niobate (LiNbO3) crystals were mainly related to the differences in microstructure caused by the crystal composition.

Defective TiO2 has attracted increasing attention for use in photocatalytic and electrochemical materials because of its narrowed band-gap and improved visible-light photocatalytic activity. However, a facile and efficient approach for obtaining defect-rich TiO2 still remains a challenge. Herein, we demonstrate such an approach to narrow its bandgap and improve visible-light absorption through implanting abundant defects by aerodynamic levitated laser annealing （ALLA） treatment. Note that the ALLA method not only provides rapid annealing, solidifying and cooling process, but also exhibits high efficiency for homogeneous and defective TiO2 nanoparticles. The laser-annealed TiO2 achieves a high hydrogen evolution rate of 8.54 mmol.h-1.g-1, excellent decomposition properties within 60 min, and outstanding recyclability and stability, all of which are superior to the corresponding properties of commercial P25.

Purpose Considering the transportation structure in the factory is responsible for transporting materials, thus when analysing the axially moving characteristics of the conveyor belt in operation, the effect of the load must be considered. Methods Based on Von Karman’s nonlinear plate theory, the motion equations of the system are established using the assumed mode method and Hamilton’s principle. The effects of the concentrated mass positions on the dynamic characteristics of the system are analyzed. The stability properties of the system are analyzed by solving the generalized eigenvalue problem. The amplitude–frequency response curves of the transverse generalized displacements of the system are drawn and analyzed by numerical calculation. Results The effects of the concentrated mass position, the axially moving velocity, and the external excitation amplitude on the nonlinear amplitude–frequency responses of the system are studied. The results show that the concentrated mass position has significant effects on the natural frequency of the system. All the amplitude–frequency response curves of the system under the harmonic excitation show the hardening type nonlinearity. The concentrated mass and the axially moving velocity have a great influence on the first- and second-order resonances of the system. With the excitation amplitude, axially moving velocity, and concentrated mass changing, the system appears complex nonlinear response phenomena.

In this paper, the dynamic response of axially moving geometric nonlinear plates carrying moving mass is investigated. Based on von Kármán plate theory, the time-varying dynamic equation of the axially moving plate under moving loads is obtained by using the extended Hamiltonian principle and discretized into a set of finite-dimensional ordinary differential nonlinear equations by the assumed mode method. The equation incorporates the additional mass, damping, and stiffness matrix resulting from the inertia force, centrifugal force, and Coriolis force of the moving mass. Comparing the axially moving of plate, dynamic response results of linear and nonlinear results show the necessity of considering geometric nonlinearity in the model. The effects of system load parameters, including the mass of the moving load, the speed of the axially moving plate, and the plate’s aspect ratio on the vibration characteristics of the plate, are discussed. The dynamic responses of the axially moving plates under three different moving load trajectories are contrasted. Numerical results show that increasing the moving load mass and the speed of the axially moving plate leads to greater instability of the system, and the aspect ratio and different moving trajectories also have effects on the transverse vibration of the plate.

Searching for new low-dimensional organic–inorganic hybrid phosphors is of great significance due to their unique optical properties and wide applications in the optoelectronic field. In this work, we report a Mn4+ doped zero-dimensional organic–inorganic hybrid phosphor [N(CH3)4]2ZrF6, which was synthesized by a wet chemical method. The crystal structure, thermal stability, and optical properties were systemically investigated by means of XRD, SEM, TG-DTA, FTIR, DRS, emission spectra, excitation spectra, as well as decay curves. Narrow red emission with high color purity can be observed from [N(CH3)4]2ZrF6:Mn4+ phosphor, which maintains effective emission intensity even at room temperature, indicating its potential practical application in WLEDs. In the temperature range of 13–295 K, anti-Stokes and Stokes sidebands of Mn4+ ions exhibit different temperature responses. By applying the emission intensity ratio of anti-Stokes vs. Stokes sidebands as temperature readout, an optical thermometer with a maximum absolute sensitivity of 2.13% K−1 and relative sensitivity of 2.47% K−1 can be obtained. Meanwhile, the lifetime Mn4+ ions can also be used for temperature sensing with a maximum relative sensitivity of 0.41% K−1, demonstrating its potential application in optical thermometry.

Searching for new low-dimensional organic-inorganic hybrid phosphors is of great significance due to their unique optical properties and wide applications in the optoelectronic field. In this work, we report a Mn4+ doped zero-dimensional organic-inorganic hybrid phosphor [N(CH3)4]2ZrF6, which was synthesized by a wet chemical method. The crystal structure, thermal stability, and optical properties were systemically investigated by means of XRD, SEM, TG-DTA, FTIR, DRS, emission spectra, excitation spectra, as well as decay curves. Narrow red emission with high color purity can be observed from [N(CH3)4]2ZrF6:Mn4+ phosphor, which maintains effective emission intensity even at room temperature, indicating its potential practical application in WLEDs. In the temperature range of 13-295 K, anti-Stokes and Stokes sidebands of Mn4+ ions exhibit different temperature responses. By applying the emission intensity ratio of anti-Stokes vs. Stokes sidebands as temperature readout, an optical thermometer with a maximum absolute sensitivity of 2.13% K-1 and relative sensitivity of 2.47% K-1 can be obtained. Meanwhile, the lifetime Mn4+ ions can also be used for temperature sensing with a maximum relative sensitivity of 0.41% K-1, demonstrating its potential application in optical thermometry.Searching for new low-dimensional organic-inorganic hybrid phosphors is of great significance due to their unique optical properties and wide applications in the optoelectronic field. In this work, we report a Mn4+ doped zero-dimensional organic-inorganic hybrid phosphor [N(CH3)4]2ZrF6, which was synthesized by a wet chemical method. The crystal structure, thermal stability, and optical properties were systemically investigated by means of XRD, SEM, TG-DTA, FTIR, DRS, emission spectra, excitation spectra, as well as decay curves. Narrow red emission with high color purity can be observed from [N(CH3)4]2ZrF6:Mn4+ phosphor, which maintains effective emission intensity even at room temperature, indicating its potential practical application in WLEDs. In the temperature range of 13-295 K, anti-Stokes and Stokes sidebands of Mn4+ ions exhibit different temperature responses. By applying the emission intensity ratio of anti-Stokes vs. Stokes sidebands as temperature readout, an optical thermometer with a maximum absolute sensitivity of 2.13% K-1 and relative sensitivity of 2.47% K-1 can be obtained. Meanwhile, the lifetime Mn4+ ions can also be used for temperature sensing with a maximum relative sensitivity of 0.41% K-1, demonstrating its potential application in optical thermometry.

Searching for new low-dimensional organic–inorganic hybrid phosphors is of great significance due to their unique optical properties and wide applications in the optoelectronic field. In this work, we report a Mn[sup.4+] doped zero-dimensional organic–inorganic hybrid phosphor [N(CH[sub.3])[sub.4]][sub.2]ZrF[sub.6], which was synthesized by a wet chemical method. The crystal structure, thermal stability, and optical properties were systemically investigated by means of XRD, SEM, TG-DTA, FTIR, DRS, emission spectra, excitation spectra, as well as decay curves. Narrow red emission with high color purity can be observed from [N(CH[sub.3])[sub.4]][sub.2]ZrF[sub.6]:Mn[sup.4+] phosphor, which maintains effective emission intensity even at room temperature, indicating its potential practical application in WLEDs. In the temperature range of 13–295 K, anti-Stokes and Stokes sidebands of Mn[sup.4+] ions exhibit different temperature responses. By applying the emission intensity ratio of anti-Stokes vs. Stokes sidebands as temperature readout, an optical thermometer with a maximum absolute sensitivity of 2.13% K[sup.−1] and relative sensitivity of 2.47% K[sup.−1] can be obtained. Meanwhile, the lifetime Mn[sup.4+] ions can also be used for temperature sensing with a maximum relative sensitivity of 0.41% K[sup.−1], demonstrating its potential application in optical thermometry.