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SINR Driven Joint Network Selection Policy in the Heterogeneous Internet of Things

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Chinese Journal of Electronics 2017年第4期26卷 842-848页

作者： LIU Xinyi jiang jian School of Information Engineering Chang'an University China Academy of Information and Communications Technology

In the heterogeneous Internet of things(Io T), the Signal to interference plus noise ratio(SINR)and delay constraint are two important factors that influence the throughput of Io T and the performance of *** recently, most network selection policy researches were based on either the Shannon theory or the signal strength, while the combined influence of the delay constraint and the SINR, which has a significant impact on resource utilization, is hardly considered. We therefore propose an SINR driven joint network selection policy, which incorporates the delay constraint and the signal strength into the SINR. This policy permits Io T users to access the network with the maximum of SINR from all the available networks under the delay and signal strength *** analysis and the simulation results show that the joint network selection policy can obtain the higher throughput of Io T and average SINR comparing with other polices.

关键词： Internet of things(IoT) Heterogeneous network Joint network selection policy Signal to interfer ence plus noise ratio(SINR) Delay constraint

Observation of a 3-in-1 Russian-doll-like Complex in Solution

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Chemical Research in Chinese Universities 2022年第2期38卷 497-499页

作者： jiang jian School of Chemistry and Chemical Engineering Mudanjiang Normal UniversityMudanjiang 157000P.R.China

Supramolecular chemistry is based on non-covalent interactions that enable molecular *** weak interactions,a large number of structures,such as rotaxane[1-2]and catenane[3-4],as well as more complex structures[5-6]hav... 详细信息

关键词： Schiff-base macrocycle Russian-doll-like 3-in-1 complex CBPQT4+ Tetrathiafulvalene(TTF)

Modeling of highly efficient drug delivery system induced by self-assembly of nanocarriers: A density functional study

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Science China Chemistry 2013年第2期56卷 249-255页

作者： jiang jian CAO DaPeng Division of Molecular and Materials Simulation State Key Lab of Organic-Inorganic Composites Beijing University of Chemical Technology

Owing to the importance of drug delivery in cancer or other diseases' therapy, the targeted drug delivery (TDD) system has been attracting enormous interest. Herein, we model the TDD system and design a novel rod-like nanocarrier by using the coarse grained model-based density functional theory, which combines a modified fundamental measure theory for the excluded-volume effects, Wertheim's first-order thermodynamics perturbation theory for the chain connectivity and the mean field approximation for van der Waals attraction. For comparison, the monomer nanocarrier TDD system and the no nanocarrier one are also investigated. The results indicate that the drug delivery capacity of rod-like nanocarriers is about 62 times that of the no nanocarrier one, and about 6 times that of the monomer nanocarriers. The reason is that the rod-like nanocarriers would self-assemble into the smectic phase perpendicular to the membrane surface. It is the self-assembly of the rod-like nanocarriers that yields the driving force for the targeted delivery of drugs inside the cell membrane. By contrast, the conventional monomer nanocarrier drug delivery system lacks the driving force to deliver the drugs into the cell membrane. In short, the novel rod-like nanocarrier TDD system may improve the drug delivery efficiency. Although the model in this work is simple, it is expected that the system may provide a new perspective for cancer targeted therapy.

关键词： interface polymers microstructure statistical thermodynamics self-assembly targeted drug delivery

Further Results on Delay-distribution-dependent Robust Stability Criteria for Delayed Systems

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International Journal of Automation and computing 2011年第1期8卷 23-28页

作者： jian-jiang Yu School of Information Science and Technology Yancheng Teachers University Yancheng 224002 PRC

This paper concerns the robust stability analysis of uncertain systems with time delays as random variables drawn from some probability distribution. The delay-distribution-dependent criteria for the exponential stability of the original system in mean square sense are achieved by Lyapunov functional method and the linear matrix inequality （LMI） technique. The proposed approach involves neither free weighting matrices nor any model transformation, and it shows that the new criteria can provide less conservative results than some existing ones. Numerical examples are given to demonstrate the effectiveness and the benefits of the proposed method.

关键词： Delay-distribution-dependent robust stability stochastic time delay time-varying delay linear matrix inequality (LMI).

Impact of oxygen supply on production of terpenoids by microorganisms: State of the art

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Chinese Journal of Chemical Engineering 2021年第2期34卷 46-53页

作者： Ting-Ting Liu Han Xiao jian-Hui Xiao jian-jiang Zhong State Key Laboratory of Microbial Metabolism Joint International Research Laboratory of Metabolic and Developmental SciencesLaboratory of Molecular Biochemical Engineering and Advanced Fermentation TechnologyDepartment of BioengineeringSchool of Life Sciences and BiotechnologyShanghai Jiao Tong UniversityShanghai 200240China Zunyi Municipal Key Laboratory of Medicinal Biotechnology Center for Translational MedicineAffiliated Hospital of Zunyi Medical UniversityZunyi 563003China

Terpenoids are a class of high value-added natural products with a variety of biological *** engineered microorganisms,such as those of Escherichia coli and Saccharomyces cerevisiae,have merits in producing plant or fungus-derived terpenoids,due to their mature genetic manipulation,simple nutrient demand and fast ***,as a key environmental factor,is particularly important to microbial metabolism and growth,and suitable oxygen supply is viewed as a prerequisite for realizing highly efficient production of terpenoids by engineered *** this article,the role of oxygen in regulating terpenoid bioproduction is overviewed from the viewpoints of cellular carbon metabolism,energy metabolism and terpenoid *** on adjusting oxygen availability to microorganisms,including genetic modification of cellular metabolism related with oxygen utilization,are summarized and discussed,to provide helpful information for further improvement of terpenoid biosynthesis by microbes.

关键词： Terpenoid Microorganisms Oxygen supply Chassis modification

Double-plume Lagrangian particle tracking model and its application in deep water oil spill

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Journal of Hydrodynamics 2023年第3期35卷 571-581页

作者： Xin-wei Ye Xiao-jing Niu jian jiang State Key Laboratory of Hydroscience and Engineering Department of Hydraulic EngineeringTsinghua UniversityBeijing100084China

Due to the density stratification of sea water,the dispersed oil droplets and gas bubbles with small diameters,as well as the dissolved components,may remain in some specific *** double-plume Lagrangian particle tracking model for bubbly plumes in vertical density stratified environments is improved and applied to predict the underwater pollutants in a *** model considers the different properties and dissolution processes of components in crude oil and focuses on their behavior and stratification differences in the *** crude oil components are divided into several groups and the dissolution of oil and gas is also *** model is applied to simulate the“Deepwater Horizon”oil spill accident in the Gulf of Mexico in *** results show several enrichment layers of oil and gas at different depth and the differences in concentration between components,which corresponds to the distribution of petroleum pollutants in the in-situ observation.

关键词： Oil spill double-plume model Lagrangian particle tracking the Gulf of Mexico

Investigation of basic properties of fly ash from urban waste incinerators in China

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Journal of Environmental Sciences 2007年第4期19卷 458-463页

作者： jiang jian-guo XU Xin WANG Jun YANG Shi-jian ZHANG Yan Department of Environmental Science and Engineering Tsinghua University Beifing 100084 China. Shanghai Environment and Science Academy Shanghai 201203 China

Basic properties of fly ash samples from different urban waste combustion facilities in China were analyzed using as X-ray fluorescence （XRF）, scanning electron microscopy （SEM）, X-ray diffraction （XRD）. The leaching toxicity procedure and some factors influencing heavy metals distribution in fly ash were further investigated. Experimental results indicate that the fly ash structures are complex and its properties are variable. The results of XRF and SEM revealed that the major elements （〉10000 mg/kg, listed in decreasing order of abundance） in fly ash are O, Ca, Cl, Si, S, K, Na, Al, Fe and Zn. These elements account for 93% to 97%, and the content of Cl ranges from 6.93% to 29.18 %, while that of SiO2 does from 4.48% to 24.84%. The minor elements （1000 to 10000 mg/kg） include Cr, Cu and Pb. Primary heavy metals in fly ash include Zn, Pb, Cr, Cu etc. According to standard leaching test, heavy metal leaching levels vary from 0 to 163.10 mg/L （Pb） and from 0.049 to 164.90 mg/L （Zn）, mostly exceeding the Chinese Identification Standard for hazardous wastes. Morphology of fly ash is irregular, with both amorphous structures and polycrystalline aggregates. Further research showed that heavy metals were volatilized at a high furnace temperature, condensed when cooling down during the post-furnace system and captured at air pollution control systems. Generally, heavy metals are mainly present in the forms of aerosol particulates or tiny particulates enriched on surfaces of fly ash particles. The properties of fly ash are greatly influenced by the treatment capacities of incinerators or the variation of waste retention time in chamber. Fly ash from combustors of larger capacities generally has higher contents of volatile component and higher leaching toxicity, while those of smaller capacities often produce fly ash containing higher levels of nonvolatile components and has lower toxicity. The content of heavy metals and leaching toxicity maybe have no convincing correlatio

关键词： urban waste incinerator fly ash heavy metals leaching toxicity

Elevating kinetics of passivated Fe anodes with NH_(4)Cl regulator:Toward low-cost,long-cyclic and green cathode-free Fe-ion aqueous batteries

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Nano Research 2022年第4期15卷 3187-3194页

作者： Shibo Chai jianhui Zhu jian jiang Chang Ming Li School of Physical Science and Technology Southwest UniversityNo.2 Tiansheng RoadBeiBei DistrictChongqing 400715China School of Materials and Energy and Chongqing Key Lab for Advanced Materials and Clean Energies of TechnologiesSouthwest UniversityNo.2 Tiansheng RoadBeiBei DistrictChongqing 400715China Key Laboratory of Laser Technology and Optoelectronic Functional Materials of Hainan Province Key Laboratory of Functional Materials and Photoelectrochemistry of HaikouCollege of Chemistry and Chemical EngineeringHainan Normal UniversityHaikou 571158China

The environment benignity and battery cost are major concerns for grid-scale energy storage *** emerging dendrite-free Fe-ion aqueous batteries are promising due to the rich natural abundance,low cost and non-toxicity for Fe ***,serious passivation reactions on Fe anodes and poor long-term cyclability for matched cathodes still stand in the way for their practical *** settle above constraints,we herein use NH_(4)Cl as the electrolyte regulator to elevate the reaction kinetics of passivated Fe anodes,and also propose a special cathode-free design to prolong the cells lifetime over 1,000 *** added NH_(4)Cl can erode/break inert passivation layers and strengthen the ion conductivity of electrolytes,facilitating the reversible Fe plating/stripping and Fe^(2+)*** highly puffed nano carbon foams function as current collectors and actives anchoring hosts,enabling expedite Fe^(2+)adsorption/desorption,FeII/FeIII redox conversions and FeIII *** configured rocking-chair Fe-ion cells have good environmental benignity and decent energy-storage behaviors,including high reactivity/reversibility,outstanding cyclic stability and far enhanced operation *** economical,long-cyclic and green cathode-free Fe-ion batteries may hold great potential in near-future energy-storage power stations.

关键词： elevated kinetics passivated Fe anodes NH_(4)Cl regulator cathode-free design Fe-ion batteries

Relativistic Borromean states

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Chinese Physics C 2021年第4期45卷 41-46页

作者： Ziyue Wang Shao-jian jiang Yin jiang Physics Department Tsinghua UniversityBejjing 100084China State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics Innovation Academy for Precision Measurement Science and TechnologyChinese Academy of SciencesWuhan 430071China Physics Department Beihang UniversityBeijing 100191China

In this work,the existence of Borromean states is discussed for bosonic and fermionic cases in both therelativistic and non-relativistic limits from the 3-momentum shell *** the linear bosonic model,we check the existence of Efimov-like states in the bosonic *** both limits a geometric series of singularities is found in the 3-boson interaction vertex,while the energy ratio is reduced by around 70%in the relativistic limit because of the anti-particle *** by the quark-diquark model in heavy baryon studies,we have carefully examined the p-wave quark-diquark interaction and found an isolated Borromean pole at finite energy *** may indicate a special baryonic state of light quarks in high energy quark *** other cases,trivialresults are obtained as *** the relativistic limit,for both bosonic and fermionic cases,potential Borromean states are independent of the mass,which means the results would also be valid even in the zero-mass limit.

关键词： few-body systems Efimov state relativistic systems