A5100724186- Advanced Wireless Network Optimization
- Cooperative Communication and Network Coding
- Chemical Reactions and Isotopes
- Electronic Packaging and Soldering Technologies
- X-ray Diffraction in Crystallography
- Advanced MIMO Systems Optimization
- Crystallization and Solubility Studies
- Asymmetric Hydrogenation and Catalysis
- 3D IC and TSV technologies
- Advanced MEMS and NEMS Technologies
- Catalytic Cross-Coupling Reactions
- Fluorine in Organic Chemistry
- Video Coding and Compression Technologies
- Synthetic Organic Chemistry Methods
- Chemical Synthesis and Analysis
- Nanomaterials and Printing Technologies
- Wireless Communication Networks Research
- Electrohydrodynamics and Fluid Dynamics
- Aluminum Alloys Composites Properties
- Organic Electronics and Photovoltaics
- Luminescence Properties of Advanced Materials
- Catalytic C–H Functionalization Methods
- Fluid Dynamics and Heat Transfer
- Organoboron and organosilicon chemistry
- Conducting polymers and applications
Oak Ridge National Laboratory
2015-2024
Xiamen University
2024
Guizhou Normal University
2023-2024
Fuzhou University
2024
Guilin University of Technology
2024
University of Iowa
2018-2023
Government of the United States of America
2023
Nanjing Tech University
2018-2022
The Synergetic Innovation Center for Advanced Materials
2018-2022
Huazhong University of Science and Technology
2005-2018
Inter-cell interference mitigation is a key challenge in the next generation wireless networks which are expected to use an aggressive frequency reuse factor and high-density base station deployment improve coverage spectral efficiency. In this work, we consider problem of maximizing weighted sum-rate cellular network via coordinated scheduling discrete power control. We present two distributed iterative algorithms require limited information exchange data processing at each station. Both...
Controlled Pd(0)/t-Bu(3)P-catalyzed Suzuki cross-coupling polymerizations of AB-type monomers via the chain-growth mechanism with an ArPd(t-Bu(3)P)I complex as initiator are described. complexes, either prepurified or generated in situ from Pd(2)(dba)(3)/t-Bu(3)P/ArI (dba = dibenzylideneacetone) without separation/purification, were found to be efficient initiators general for controlled polymerization, narrow polydispersity indexes (PDIs) 1.13-1.35 being observed. The...
Mobile operators are witnessing a dramatic increase in traffic spurred by combination of popularity smartphones, innovative applications and diverse services. As mobile transitions from being voice dominated to video data dominated, the revenue per byte for is declining at an unhealthy rate. To counter growth build cost-effective networks, many now forging alliances RAN (Radio Access Network) sharing improve coverage capacity reasonable investments operational costs. This paper presents...
Abstract In the bottom-up synthesis of graphene nanoribbons (GNRs) from self-assembled linear polymer intermediates, surface-assisted cyclodehydrogenations usually take place on catalytic metal surfaces. Here we demonstrate formation GNRs quasi-freestanding polymers assisted by hole injections a scanning tunnelling microscope (STM) tip. While typically occur in domino-like conversion process during thermal annealing, hole-injection-assisted reactions happen at selective molecular sites...
We present a cross-layer design of transmitting scalable video streams from base station to multiple clients over shared fading wireless network by jointly considering the application layer information and channel conditions. first long-term resource allocation algorithm that determines optimal scheduling policy in order maximize weighted sum average quality all streams. prove our achieves global optimum even though problem is not concave parameter space. then devise two on-line algorithms...
Controlled Pd(0)/t-Bu3P-catalyzed Suzuki cross-coupling polymerizations of AB-type monomers via the chain-growth mechanism with a series ArPd(t-Bu3P)X (X = I, Br, Cl) complexes as initiators were described. Both isolated PhPd(t-Bu3P)X Br) and in situ generated from Pd2(dba)3/t-Bu3P/ArX employed for controlled polymerization. The found to be better general. Among them, combinations p-BrC6H4I, p-HOCH2C6H4Br p-PhCOC6H4Br Pd2(dba)3/t-Bu3P identified highly robust initiator systems, resulted...
A series of Pt(<sc>ii</sc>) complexes with narrow emission spectra were systematically investigated and Pt(ppzOczpy-4m), rationally designed predominantly <sup>3</sup>LC(<sup>3</sup>ππ*) character in T<sub>1</sub>, was fabricated into efficient blue OLEDs <italic>via</italic> a solution process.
Although wireless broadband technologies have evolved significantly over the past decade, they are still insufficient to support fast-growing mobile traffic, especially due increasing popularity of video applications. Wireless multicast, aiming exploit broadcast advantage, is a viable approach bridge gap between limited networking capacity and ever-increasing traffic demand. In this work, we propose MuVi, Multicast Video delivery scheme in OFDMA-based 4G networks, optimize multicast traffic....
The structural and photophysical properties of tetradentate Pt(ppzOppz), Pt(ppzOpopy), Pt(ppzOczpy), Pt(czpyOczpy) have been experimentally theoretically explored. Single-crystal diffraction measurements provided accurate information. Electrochemical characterizations revealed internal electronic energy levels in ground excited states. (Time-dependent) Density functional theory calculation electron distributions transition processes S0 → S1 T1 S0. Electronic study indicated that Pt(ppzOppz)...
Recently, the introduction of fluorosulfonyl (-SO
Most LED luminaires face the problem of color nonuniformity in illumination fields, which seriously degrades their lighting quality. To address this issue, we proposed a freeform TIR lens, could be applied to most widely adopted phosphor-converted LEDs and multicolor arrays. Based on light pattern overlap energy mapping, novel lens comprised panel collimator. Analysis angular uniformity (ACU), based white model, proved that normalized standard deviation (NSD) integrated with significantly...
Although wireless broadband technologies have evolved significantly over the past decade, they are still insufficient to support fast-growing mobile traffic, especially due increasing popularity of video applications. Wireless multicast, aiming exploit broadcast advantage, is a viable approach bridge gap between limited capacity and ever-increasing traffic demand. In this paper, we propose MuVi, Multicast Video delivery scheme through joint optimal resource allocation adaptive modulation...
t-Bu3P-coordinated 2-phenylaniline-based palladacycle complex (1) as the unique source of Pd(0)/t-Bu3P to form efficient initiators with ArBr for controlled Suzuki cross-coupling polymerizations AB-type monomers was described. The in situ generated were demonstrated be robust initiator systems polymerization, affording polymers unprecedentedly narrow PDIs and well-controlled functional end groups. 31P NMR study suggested that fast generation ArPd(t-Bu3P)Br complexes from precatalyst 1 might...
Ag2CO3-catalyzed hydrogen isotope exchange of five-membered heteroarenes is disclosed. The reaction can be conducted in the open air, at ambient temperature, and with D2O as deuterium source. Moreover, this protocol showed orthogonal site selectivity to existing technology, thereby greatly expanding scope substrates for HIE reaction. mechanistic study indicated that carbonate group plays a crucial role achieve high levels incorporation by lowering activation energy H/D process.
The K2CO3/18-crown-6-catalyzed H/D exchange of heretoarenes in high atom % deuterium incorporation is disclosed. use a weak base as catalyst leads to excellent site selectivity and broad functional group tolerance. Control experiments indicated that the bromide, which enhances adjacent C-H bond reactivity, removable directing essential. Moreover, conversion bromide other groups also performed construct useful deuterated compounds.
Controlling the monomer sequence of synthetic polymers is a grand challenge in polymer science. Conventional control has been achieved dispersed by exploiting kinetic tendencies monomers and their order addition. While blocks multiblock copolymers can be readily tuned using sequential addition (SAM), over distribution eroded as targeted block size approaches single unit (i.e., Xn ∼ 1) due to stochastic nature chain-growth reactions. Thus, unique are needed ensure precise additions. Herein,...
Future 4G cellular networks are featured with high data rate and improved coverage, which will enable realtime video multicast broadcast services. Scalable coding is very appropriate for wireless service because it allows to choose different modulation schemes (MCSs) layers can provide good quality users in channel conditions while still maintaining reasonable other users. In order apply scalable streaming, important MCS each layer determine the right resource allocation among multiple...
A facile method for introducing deuterium atoms onto an aromatic nucleus <italic>via</italic> Br/D exchange with high efficiency is disclosed.
Deterium-labeled (hetero)aryl bromide is one of the most widespread applicable motifs to achieve important deuterated architectures for various scientific applications. Traditionally, these deterium-labeled bromides are commonly prepared via multistep syntheses. Herein, we disclose a direct H/D exchange protocol deuteration using Ag2CO3 as catalyst and D2O deuterium source. This highly efficient, simply manipulated, appliable deuterium-labeling over 55 including bioactive druglike molecules...