3.165 hasil untuk "ZHANG Cheng"
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Artikel Jurnal
Loosened Nut Detection in Rigid Catenary Systems Based on Progressive Classification Algorithm
[Objective] In response to the challenges posed by the diverse states and complex imaging conditions for nuts in real inspection environments， it is aimed to achieve automated detection of loosened nuts in rigid catenary systems， thereby improving inspection efficiency and reducing manual labor…
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Artikel Jurnal
Emphasized the diagnosis and therapy of curative neurogenetic diseases
In recent years, great progress has been made in the treatment of neurogenetic diseases. Specific drugs have been used to treat diseases that were uncurable in the past, and there are noteworthy curative effects. For example, oral intake of PCT124 can improve the squatting and walking ability of…
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Artikel Jurnal Teks lengkap
Effects of Phosphorus-Free Conversion Process Parameters on the Adhesion Properties of Electrophoretic Paint Film
To address the issue of insufficient adhesion strength of electrophoretic paint film on the cold-rolled steel plates beneath the doors of white body vehicles， this study compared the effects of various process parameters， including phosphorus-free conversion treatment time， electrophoretic baking…
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Artikel Jurnal
Design of supply chain management optimization model based on improved genetic algorithm
In the globalized and fiercely competitive market environment, supply chain management plays a pivotal role in the operation and development of enterprises. A supply chain management optimization model based on improved genetic algorithm is proposed. Through simulation experiments, the performance…
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Preprint Teks lengkap
A Nontrivial Upper Bound on the Out-of-Sample $R^2$ in Return Forecasting
This study establishes a nontrivial upper bound on the out-of-sample $R^2$ ($R^2_{\text{OOS}}$) in return forecasting. In particular, we define a coin-flip oracle model that, under the same directional accuracy, theoretically outperforms practical models in terms of MSE. The $R^2_{\text{OOS}}$ of…
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Artikel Jurnal Teks lengkap
Fluorine in Medicinal Chemistry: In Perspective to COVID-19
[Image: see text] Over two years into the outbreak of COVID-19, the quest for effective and economical drugs has become starkly clear to reduce the risk of progression of coronavirus disease. A number of drugs have been investigated, and they can be taken orally at home and be used after exposure…
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Artikel Jurnal Teks lengkap
Learnable Topological Features for Phylogenetic Inference via Graph Neural Networks
Structural information of phylogenetic tree topologies plays an important role in phylogenetic inference. However, finding appropriate topological structures for specific phylogenetic inference tasks often requires significant design effort and domain expertise. In this paper, we propose a novel…
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Artikel Jurnal
Ecological Restoration Strategy for the Damage and Effects of Coal Mining on Environment in Shanxi Province
Through a comprehensive investigation and analysis of the status and types of the environmental damage in the nation’s largest coal mine production area Shanxi province,it indicates that coal mining cause many environmental problems and serious hazard in Shanxi province.Also the cause is analyzed…
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Artikel Jurnal Teks lengkap
Novel signaling axis in CML-initiating cells
In this issue of Blood, Kobayashi et al demonstrate that CD25, the α-chain of the interleukin-2 receptor (IL2RA), is expressed by certain cells that initiate chronic myeloid leukemia (CML) in a mouse model and that the IL-2/CD25 signaling axis supports CML development.(1)
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Artikel Jurnal Teks lengkap
Hematopoietic stem cells: interplay with immunity
Ample evidence indicated that hematopoietic stem cells (HSCs) receive signaling from infection or other immune responses to adjust their differentiation and self-renewal. More recent reports also suggested that, while the bone marrow microenvironment or niche may provide the immune privilege for…
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Artikel Jurnal Teks lengkap
Long-term complications after endoscopic sphinctectomy: sphincter Oddi dysfunction and treatment
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Artikel Jurnal
Auto correct method of AD converters precision based on ethernet
Ideal AD conversion should be a straight zero-crossing line in the Cartesian coordinate axis system. While in practical engineering, the signal processing circuit, chip performance and other factors have an impact on the accuracy of conversion. Therefore a linear fitting method is adopted to…
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Artikel Jurnal Teks lengkap
Analysis and recognition of endoscopic treatment for cholelithiasis from the view of disease of pancreaticobiliary junction
Cholelithiasis is a common disease, which seriously endangers human health. The traditional treatment mainly depended on open cholecystectomy and biliary tract exploration. With the development of minimally invasive technology, the endoscopic management including laparoscopy, choledochoscopy and…
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Artikel Jurnal Teks lengkap
Folding helical proteins in explicit solvent using dihedral-biased tempering
Using a single-trajectory-based tempering method with a high-temperature dihedral bias, we repeatedly folded four helical proteins [α(3)D (PDB ID: 2A3D, 73 residues), α(3)W (1LQ7, 67 residues), Fap1-NR(α) (2KUB, 81 residues) and S-836 (2JUA, 102 residues)] and some of the mutants in explicit…
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Artikel Jurnal Teks lengkap
Estimating statistical distributions using an integral identity
We present an identity for an unbiased estimate of a general statistical distribution. The identity computes the distribution density from dividing a histogram sum over a local window by a correction factor from a mean-force integral, and the mean force can be evaluated as a configuration average…
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Artikel Jurnal Teks lengkap
Simulation via direct computation of partition functions
In this paper, we demonstrate the efficiency of simulations via direct computation of the partition function under various macroscopic conditions, such as different temperatures or volumes. The method can compute partition functions by flattening histograms, through, for example, the Wang-Landau…
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Artikel Jurnal Teks lengkap
Enhanced sampling and applications in protein folding in explicit solvent
We report a single-copy tempering method for simulating large complex systems. In a generalized ensemble, the method uses runtime estimate of the thermal average energy computed from a novel integral identity to guide a continuous temperature-space random walk. We first validated the method in a…
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Artikel Jurnal Teks lengkap
Enhanced sampling in generalized ensemble with large gap of sampling parameter: Case study in temperature space random walk
We present an efficient sampling method for computing a partition function and accelerating configuration sampling. The method performs a random walk in the λ space, with λ being any thermodynamic variable that characterizes a canonical ensemble such as the reciprocal temperature β or any variable…
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