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3261
Influence of Electron Transfer Mediators in the Pd(II)-Catalyzed Oxidative Carbonylation of Aniline
Published 2025-05-01“…Testing several Pd(II) complexes, metal cocatalysts, and promoters, we have found that the [PdCl<sub>2</sub>(dppf)]/FeCl<sub>3</sub>/LiBr = 1/1200/200 (mol/mol) system efficiently catalyzes the carbonylation of aniline to form 1,3–diphenylurea selectively (100%) with a TOF of ca. 1177 h<sup>−1</sup>. …”
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3262
Surrounding Rock Stability Classification Method of Coal Roadway Based on In Situ Stress
Published 2021-01-01“…Taking into account the complexity of the classification of surrounding rock, some factors such as the strength of surrounding rock, in situ stress, the main roof first weighting interval, the size of the chain pillar, and the immediate roof backfilled ratio are selected as the evaluation indexes. …”
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3263
Adaptive beamforming of massive MIMO based on DoA in high mobility scenarios
Published 2017-06-01“…A direction of arrival based (DoA-based) beamforming of massive MIMO was proposed for high-speed railway scenarios.In order to guarantee that the optimal system capacity can be obtained during traveling,an iterative multi-beams scheme was proposed.It aimed to design different beams for different mobile carriage terminals (MCT) respectively.The proposal adaptively selected the number of antennas for each beam,and adaptively designed the number of beams according to system capacity.Moreover,the scheme didn’t need channel state information (CSI) that can reduce system implementation complexity and cost.Numerical results indicate that the proposed scheme is suitable for high-speed scenarios,the system performance can be improved more efficiently compared to conventional methods.…”
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3264
Study on the multistage iterative rank-reduced method
Published 2007-01-01“…On the background of joint space-time anti-jammer processing for GPS receiver,multistage Wiener filter-ing(MWF)algorithm and auxiliary vector filtering(AVF)algorithm was deeply analyzed as two typical multistage itera-tive rank-reduced method in this article and their immanent relationship was pointed out.A new algorithm was proposed which has a forward recursion on the data level and a backward iterative.Compared with MWF and AVF,the proposed algorithm has a better performance,reduces the computation complexity and selects the filter rank more easily.It suits with practical realization of joint space-time anti-jammer processing for GPS receiver.Numerical simulation demon-strates that the proposed method is effect and efficient.…”
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3265
Study on the multistage iterative rank-reduced method
Published 2007-01-01“…On the background of joint space-time anti-jammer processing for GPS receiver,multistage Wiener filter-ing(MWF)algorithm and auxiliary vector filtering(AVF)algorithm was deeply analyzed as two typical multistage itera-tive rank-reduced method in this article and their immanent relationship was pointed out.A new algorithm was proposed which has a forward recursion on the data level and a backward iterative.Compared with MWF and AVF,the proposed algorithm has a better performance,reduces the computation complexity and selects the filter rank more easily.It suits with practical realization of joint space-time anti-jammer processing for GPS receiver.Numerical simulation demon-strates that the proposed method is effect and efficient.…”
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3266
Principles of Arranging Independent Appraisal of Competences and Professional Development of Employees in Organization
Published 2023-07-01“…Thus, results of independent appraisal help project the employee’s profile and make decision concerning arrangement of training and selecting acute subjects. Preliminary independent appraisal of competence possession can provide efficient training of workers, which fosters the development of staff potential and sustainable functioning of then organization in general.…”
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3267
A Beam Search Framework for Quantum Circuit Mapping
Published 2025-02-01“…By iteratively selecting, expanding, and making decisions, high-quality target circuits are generated. …”
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3268
The brain ages optimally to model its environment: evidence from sensory learning over the adult lifespan.
Published 2014-01-01“…Theoretical neurobiology offers a simpler explanation for all of these effects--from a Bayesian perspective, as the brain is progressively optimized to model its world, its complexity will decrease. A corollary of this complexity reduction is an attenuation of Bayesian updating or sensory learning. …”
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3269
Comparative analysis and application of novel spectrophotometric approaches and bioassay for fast macrolide quantification in table
Published 2025-07-01“…Spectrophotometric techniques were based on charge transfer complexation through naphthoquinone derivatives. Reactions were carried out in alkaline medium using 1,2-naphthoquinone-4-sulphonate and phylloquinone, which showed an absorption maximum at 452 and 455 nm, respectively. …”
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3270
Recent Developments in the Metal-Catalyzed Synthesis of Nitrogenous Heterocyclic Compounds
Published 2024-11-01“…Transition metal complexes, with their ability to activate and selectively functionalize organic substrates, have revolutionized various areas of synthetic chemistry. …”
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3271
NevusCheck: A Dysplastic Nevi Detection Model Using Convolutional Neural Networks
Published 2025-01-01“…Therefore, the research aims to develop a model to diagnose dysplastic nevi using a deep learning network whose classification is based on the pre-trained architecture EfficientNet-B7, which was selected for its high classification accuracy and low computational complexity. …”
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3272
Promiscuity in Polyphenol–Protein Interactions—Monitoring Protein Conformational Change upon Polyphenol–Protein Binding by Nano-Differential Fluorimetry (Nano-DSF)
Published 2025-02-01“…As a major advantage, measurements are carried out at a high dilution, avoiding the precipitation of polyphenol–protein complexes, allowing the rapid and efficient acquisition of quantitative and qualitative binding data. …”
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3273
On the Need of Angle Diversity Receiver for Downlink NOMA-Based Visible Light Communication Systems
Published 2025-01-01“…Specifically, two methodologies are proposed to calculate the TPA coefficients for ADRs assuming both approaches to manage the combination of photodiodes; select best combining (SBC) and maximum ratio combining (MRC). …”
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3274
On the Location of a Constrained k-Tree Facility in a Tree Network with Unreliable Edges
Published 2019-01-01“…The time complexity of the proposed algorithm is Olkn. Examples are provided to illustrate the performance of the proposed algorithm.…”
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3275
Tandem reductive amination and deuteration over a phosphorus-modified iron center
Published 2025-02-01“…Abstract Deuterated amines are key building blocks for drug synthesis and the identification of metabolites of new pharmaceuticals, which drives the search for general, efficient, and widely applicable methods for the selective synthesis of such compounds. …”
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3276
Effect of Electron Donor Groups on Optoelectronic Properties of Betalain Dyes: A DFT Study
Published 2025-08-01“…The charge density distribution in the complexes indicates appropriate ability of the dyes for charge injection to the semiconductor. …”
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3277
Spectrum‐sensing algorithm based on graph feature fusion
Published 2024-12-01“…Thus, compared to existing algorithms, except block range‐ and energy‐detection‐based methods, the proposed algorithm demonstrates the best spectrum‐sensing performance under low SNRs and channel‐fading conditions, while achieving the lowest computational complexity. The proposed approach enables more efficient and accurate spectrum sensing, fostering advancements in communication technologies and defence applications.…”
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3278
Detection of Pear Quality Using Hyperspectral Imaging Technology and Machine Learning Analysis
Published 2024-12-01“…In summary, the combination of HSI and machine learning models enabled an efficient, rapid, and non-destructive detection of pear quality and provided a practical value for quality control and the commercial processing of pears.…”
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3279
New forgery attack on the authenticated cipher SCREAM and iSCREAM
Published 2016-01-01“…Authentication encryption algorithms have been widely used in networks security system since these al-gorithms can efficiently provide both privacy and integrity measurement for data transmission. …”
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3280
Mono‐Ethyl‐Phosphonates: Functional Group Masking Strategy to Stabilize and Optimize the Pharmacokinetics of Rare Earth Radiochelates
Published 2025-07-01“…Spectrophotometric studies reveal reduced thermodynamic stability for [Sc(L2‐Et)] and [Lu(L2‐Et)] when compared with their phosphonate parent complexes. Radiolabeling with 44Sc and 177Lu remains efficient at ≤ 40 °C (155‐906 mCi μmol−1) with corresponding radiochelates remaining >87% and >98% inert in plasma after one isotope half‐life. …”
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