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Energy Internet promotes the vigorous development of new access network services, which requires access networks to provide support for new services quickly, flexibly, and efficiently. The extension and penetration ability of the access network has been continuously enhanced, and it can adapt to the complex operating environment of the distribution side. Because it is close to the end of the power grid, the network is exposed to the public environment, and it is vulnerable to illegal intrusion, security protection, and other issues. In this paper, based on the ZigBee network, through the study of time series and ARIMA prediction model, first of all, the original data is analyzed in time series, then the data is stabilized. The model is determined and established, and finally, the simulation model is predicted. The test proves that the model studied in this paper has high acquisition accuracy and achieves prediction analysis. Timely warning of meteorological temperature is used as a part of the source data, which can save energy and reduce the acquisition cost while ensuring the amount of data collected.

We theoretically study magnon control of light transmission in a cavity magnomechanical system, which consists of an active magnon mode and a passive microwave cavity mode. Phonon-magnon coupling and cavity photon-magnon coupling can be achieved via magnetostrictive interaction and magnetic dipole interaction respectively in this system. By driving a small ferromagnetic sphere which connected by an optical fiber to the inner wall of a microwave cavity, the effective magnon-gain can be obtained. We find that the transparent, absorptive and amplificatory windows can appear by adjusting the gain of the magnon mode, and the introduction of gain can realize significant amplification of transmitted probe power, especially at the EP point. In comparison with traditional optomechanically induced amplification, the amplification can be controlled not only by adjusting the driving field and magnon-microwave coupling, but also by adjusting the external magnetic field. Our results lays a theoretical foundation for the study of the magnon control in magnomechanical systems.

First, based on a given low-light image, moderately exposed and overexposed images are generated through the Exposure Image Prediction Model (EIPM).Then all three generate feature maps by a Feature Extraction Module (FEM),and then the feature maps of them are denoised. Subsequently, the feature map of the low-light image is fused with the feature maps of the two exposure rates images respectively. Finally, an adaptive weighted fusion method is used to obtain ultimate enhanced image. Experiments show that by comparing with the current SOTA algorithms,the proposed ELLIE algorithm, both in the detail feature retention and in color recovery have been significantly improved, and the subjective and objective evaluation indicators also have obvious advantages.

The influence of the atom’s spatial degrees of freedom and the purity of the initial state on the dynamics of Bell non-locality, entanglement, geometric measure of quantum discord (GMQD) and quantum discord in a double Jaynes–Cummings model are investigated. We study the above four quantum correlations for an initial Werner-like state between the electronic states of the two atoms and between the two cavities respectively and find that all these quantum correlations are sensitive to the wave packet width and the purity of the initial state. For Bell non-locality, we find the phenomenon of sudden death and sudden birth, whereas the other three quantum correlations decay to zero asymptotically. We find that both the wave packet width and the purity of the initial state affect the GMQD and quantum discord in a similar way and we also notice that GMQD and quantum discord always exist, except where the purity of the initial state is zero, while Bell non-locality and entanglement can occur only when the purity meets certain conditions.

Excited-state double proton transfer (ESDPT) in the 1-[(2-hydroxy-3-methoxy-benzylidene)-hydrazonomethyl]-naphthalen-2-ol (HYDRAVH2) ligand was studied by the density functional theory and time-dependent density functional theory method. The analysis of frontier molecular orbitals, infrared spectra, and non-covalent interactions have cross-validated that the asymmetric structure has an influence on the proton transfer, which makes the proton transfer ability of the two hydrogen protons different. The potential energy surfaces in both S0 and S1 states were scanned with varying O–H bond lengths. The results of potential energy surface analysis adequately proved that the HYDRAVH2 can undergo the ESDPT process in the S1 state and the double proton transfer process is a stepwise proton transfer mechanism. Our work can pave the way towards the design and synthesis of new molecules.

The different fluorescence behavior caused by the excited state proton transfer in 3-hydroxy-4-pyridylisoquinoline (2a) compound has been theoretically investigated. Our calculation results illustrate that the 2a monomer in tetrahydrofuran solvent would not occur proton transfer spontaneously, while the 2a complex in methanol (MeOH) solvent can undergo an asynchronous excited state intramolecular proton transfer (ESIPT) process. The result was confirmed by analyzing the related structural parameters, infrared vibration spectrum and reduced density gradient isosurfaces. Moreover, the potential curves revealed that with the bridging of single MeOH molecular the energy barrier of ESIPT was modulated effectively. It was distinctly reduced to 4.80 kcal/mol in 2a-MeOH complex from 25.01 kcal/mol in 2a monomer. Accordingly, the ESIPT process induced a fluorochromic phenomenon with the assistant of proton-bridge. The elucidation of the mechanism of solvent discoloration will contribute to the design and synthesis of fluorogenic dyes as environment-sensitive probes.

At present, Bayesian networks lack consistent algorithms that support structure establishment, parameter learning, and knowledge reasoning, making it impossible to connect knowledge establishment and application processes. In view of this situation, by designing a genetic algorithm coding method suitable for Bayesian network learning, crossover and mutation operators with adjustment strategies, the fitness function for reasoning error feedback can be carried out. Experimental results show that the new algorithm not only simultaneously optimizes the network structure and parameters, but also can adaptively learn and correct inference errors, and has a more satisfactory knowledge inference accuracy rate.

Based on the policies and rural revitalization strategies launched by government, this paper studied the relevant cultural background of Lechang town of Shaoguan area from three aspects of history, folk custom and food, taking the South China Educational History Research Base (Pingshi) as an example. On account of these historical and cultural information, it provides a basis for the spatial organization in workshop mode and the functional space design in historical scene restoration. And further study the actualities and problems, which the workshop mode faced in how to combine the learning theme, architectural design and other aspects with history, regional culture, education. Finally, it summarizes the space design strategies of workshop mode of Pingshi Old Street through practical experience, which provides reference for the renovation design of research and study base under the educational history background.

As an extremely successful case in the renewal of railway heritage, New York High Line Park has aroused the research of many scholars at home and abroad. This paper analyzes and compares a large number of existing cases to classify the existing railway heritage renewal models, and summarize the internal application characteristics and external manifestations of various models. Through the analysis of the common points in the design methods of the New York High Line Park, a representative case of railway heritage transformation, the three functional characteristics of the high line park renewal model are refined, and the combination mode of materials in the actual project and its use are discussed. Functional evaluation summarizes the modular methods of project transformation with the same internal factors, and proposes feasible transformation models. It is of reference significance for future Chinese railway heritage reconstruction projects.

Through literature and the public, this article had in-depth understanding of the historical events of South China education and followed three design principles of memorial space: respect for history, emotional resonance and sustainable development. Then this article had overall planning and landscape nodes design for the South China Educational History Research Base, realized the historical information spatialization, inherited and carried forward the spirit of patriotism, so that more people could recognize and remember this history. This article through analyzed and concluded the 4 design methods of the Research Base project as following: narrative, symbolism and metaphor, white space and public participation, which can provide a certain reference for the design of memorial space in the later stage of the project and other similar projects.

This paper makes a comparative study on the distribution characteristics of traditional settlements along the two key ancient roads in Nanxiong basin, including landform, language division, settlement elevation, settlement scale and the relationship between settlements. Through the comparison of various characteristics, this paper reveals the reasons of the differences between the two ancient roads.

The evaluation criteria of traditional urban park landscape evaluation methods are mostly flood control effect and commercial demand, and the index evaluation is not comprehensive. Therefore, taking Kunming as an example, this paper introduces SBE method and AHP method to evaluate urban park landscape. This paper analyzes the evaluation methods of urban landscape and urban park landscape at home and abroad, and selects infrastructure, landscape aesthetic degree, natural ecology and social culture as evaluation indexes of urban park landscape. The park landscape evaluation system of Kunming city was established, the plant landscape evaluation index was set up, and the landscape characteristics of urban park were classified. The comprehensive judgment matrix of urban park landscape evaluation is constructed to complete the comprehensive evaluation of urban park landscape. The results show that this method can evaluate the park landscape of Kunming in all aspects, and the accuracy and rationality of the evaluation are significantly improved in the actual application process.

Ancient post road is the channel of material and information transmission in ancient China, which has the function of migration and cultural exchange. Xijing Ancient Road is one of the ancient post roads in Guangdong. It has a large span from north to south, and settlements along the road have different location and morphological characteristics. This paper analyzed the data of 113 traditional settlements along Xijing Ancient Road by using Google Earth and ArcGIS. It is found that the site of villages has the trend to distribute in the high elevation district, settled on the gentle slope and close to the foot of mountain. From the perspective of village morphology, most of the villages are massive. The street texture of the settlements in the north of the ancient road is grid-like, while the lanes in the south of the ancient road are mainly transverse. Different natural environment along the Xijing Ancient Road is the basic influencing factor, and the complex and diverse immigration backgrounds are the key influencing factors. Both of the two factors work together to lead to the diversity of traditional settlements along the Xijing Ancient Road.

With the development of the Internet, various types of application systems are emerging, which brings more and more server access, more and more content, and more and more strong interaction between users and the system. The new generation of microservice software development framework brings great pressure for data transmission and storage. In order to improve the stability of data storage and read and write speed. This paper proposes a cache service architecture designed by sentinel mode. Redis is used as the core intermediary layer of high-performance storage to solve the lightweight and high concurrent data, and multiple linear regression analysis is used to determine those data that need asynchronous transmission and heavyweight transmission with RabbitMQ message queue for transmission. Finally, it realizes the efficient storage, expansion and effective and timely information communication of data in the whole microservice environment.

Machine learning and artificial intelligence have become very diverse, and progress h as been made in perception technology, which can recognize the senses of machines, including hearing, vision, smell, taste and touch. We are recently studying a technological change that ha s grown the dialogue information in our lives into a mainstream recognizable digital activity. T his project will build a conversation subject model in the computing framework, which tracks t he conversation speech behavior by the functional grammar model. The recognition of Machin e Cognition and logic language is the key path of our research. The language model used is Rol e and Reference Grammar (RRG) to decompose sentences and understanding. In addition, we find an optimization scheme to assist the main body thinking is internal effect and external effect. (1) The subject has its own emotions (anger, joy, sadness, disappointment, joy), which c an affect the subject’s state at any time. (2) the external effect of the subject is determined by pe ople and other subjects, and the intelligent conversation agent will get interaction and composit e response through two effects. The RRG directional link system will be used in the language f ramework to build a language model in the software to help the machine analyze human langua ge through speech behavior. This interactive language analysis model ensures that the machine can accurately define human meaning in intelligent conversation. In this project, we will impro ve the development of machine learning and artificial intelligence in human language recogniti on and analysis, and the technology is very useful in various human behaviors such as smart ho me, enterprise management and data analysis. There is no doubt that this technology will make a great contribution to human beings in the field of Computing Science in the future.

Carbon dots (CDs) with strong fluorescence were synthesized by a facial and green hydrothermal method using biomass quinoa as the carbon source. The as-prepared carbon dots (CDs) aqueous solution shows bright blue photoluminescence under the irradiation of UV lamp with a quantum yield of 14% and considerable luminescence stability and excellent strong photobleaching resistance. The as-prepared CDs was nontoxic for in vitro and in vivo applications. In addition, not only the as-prepared CDs were used for HeLa cells imaging, but also detect Fe3+ ions in cells, and the ideal imaging pictures were obtained under excitation of 405 nm. The as-prepared carbon dots possessed excellent responsive properties towards Fe3+. The quenching phenomenon can be used to detect the Fe3+ ions within a linear range of 0–300 μmol l−1 with a limit of detection of 50 nmol l−1.

In this paper, ProcessLink is a user behavior judgment and recommendation algorithm based on the information system business process. The purpose is to provide users with reliable unknown process selection. The algorithm idea is as follows: firstly, collect and analyze historical data, establish the relevance feedback set of “Time-Role -Process”, establish the interest relationship decision table of each role according to the process flow link behavior between users. Starting from each process node, the Apriori algorithm completes a round of initial filtering on these relationships, and obtains the similarity association degree of each role node in the process link; finally, the recommendation sorting is carried out through the recommendation algorithm model matching and scenario similarity calculation. This research realizes the accurate prediction of the user’s next link and gives the corresponding opinions. The experimental results show that the algorithm is effective and accurate in the business process.

It is of great significance to study the relationship between the excited state intramolecular proton transfer (ESIPT) properties and antioxidant activities of compounds in the field of life sciences. In this work, two novel compounds 5HF–OMe and 5HF–NH2 are designed through introducing a methoxy- and amino-group into the structure of 5-hydroxyflavone (5HF) respectively. The relationship between the ESIPT reaction and antioxidant activities of the three compounds is studied via the density functional theory (DFT) and time-dependent DFT (TD-DFT) methods. The calculated potential energy curves suggest that the rate of ESIPT reaction will gradually slow down from 5HF to 5HF–OMe and 5HF–NH2. In addition, the antioxidant activities of the three compounds gradually enhance from 5HF to 5HF–OMe and 5HF–NH2, which can be seen from the calculated energy gaps and ionization potential values. Interestingly, the above results imply that the rate of ESIPT reaction has a negative relationship with the antioxidant activities of the compounds, i.e., the slower rate of ESIPT reaction will reflect the higher antioxidant activity of the compound, which will provide valuable reference for detecting the antioxidant activity of compound via the photophysical method.

The influences of the substituent base position on the excited state intramolecular proton transfer fluorescence properties were explored in 2-(2′-hydroxyphenyl)imidazo[1,2-a]-pyridine (HPIP) and HPIP’s derivatives (5′Br-HPIP and 6′Br-HPIP). And the density functional theory (DFT) and time-dependent DFT (TD-DFT) methods were used to calculate the molecule structures. The calculated results showed that the influence of 5′Br-HPIP on the fluorescence intensity is stronger than that of 6′Br-HPIP. The fluorescence emission peak of 5′Br-HPIP occurred a blue shift compared with HPIP, and 6′Br-HPIP exhibited an opposite red shift. The change of the fluorescence emission peak was attributed to the decrease of the energy gap from 6′Br-HPIP to 5′Br-HPIP. Our work on the substituent position influence could be helpful to design and develop new materials.

Due to the shortage of land space resources and the uneven distribution of urban space resources under the current development model, the existing urban public open space is distributed discretely in urban space, lacking systematic integration and full-cycle guidance and control and management which highlights lacking publicity. The existing urban public space can not meet the needs of public life of citizens, while the building public open space attached to the building plots that has not been utilized effectively possesses great potential for development and utilization. In recent years, the Shenzhen Bay Street complex in the Nanshan District of Shenzhen has become one of the few practical cases of the joint development design and integrated construction of urban public open space and building public open space in China. The systematic study from it can provide valuable reference for the integrated development and guidance and control of public open space in Chinese cities.

Electrical conductivity of electrode plays a vital role in governing the performance of supercapacitor. However, the measurement of conductivity is difficult due to the complex pore structure and binder content in supercapacitor electrode. Characterization of the intrinsic conductivity of carbon network is significant for further understanding its supercapacitive behavior. In this paper, a direct conductivity measurement is adopted to investigate electron transport in biochar produced under different pyrolysis temperatures. Four-point probe technique is used to measure the apparent conductivity of porous biochar monolith. To eliminate the structure effect on conductivity, calculation based on Reynolds and Hough rule is provided to obtain the intrinsic conductivity of carbon network. The significance of electrical conductivity on the supercapacitive behavior is discussed.

Architecture public open space is an indispensable part of urban public open space, and its construction is a long-term and sustainable process. Some mainland cities and regions in China began to pay attention to the role of building public open space in urban public space from the 1990s and relevant incentives were formulated when land was sold. However, due to the lack of a targeted and complete control system, especially the lack of identification criteria for architecture public open space, the construction, use and maintenance of architecture public open space are unsatisfactory. Based on the study of New York’s POPS management and control system, this paper summarizes the experience of identification and evaluation of architecture public open space in order to provide inspiration for the establishment of identification and evaluation system of building public open space in China.

Two-dimensional (2D) atomic crystals have triggered significant excitement due to their rich physics as well as potential industrial applications. The possibility of a molecular counterpart with scalable processability and superior performance is intriguing from both fundamental and applied perspectives. Here, we present the freestanding 2D molecular charge-transfer bis(ethylenedithio)tetrathiafulvalene-C60 crystals prepared by a modified Langmuir-Blodgett method, with precisely controlled few-layer thickness and centimeter-scale lateral dimension. The interconversion of intrinsic excited process, the long-range ordering and anisotropic stacking arrangement of the molecular layered crystals generate external stimuli responsive behaviors and anisotropic spin-charge conversion with magnetic energy conversion ability, as well as a superior UV photosensitivity. Moreover, the 2D freestanding crystals demonstrate superior magneto-electrical properties. These results suggest that a new class of 2D atomically thin molecular crystals with novel electronic, optical and magnetic properties have great potential for spintronic, energy and sensor applications.

Density functional theory (DFT) and time-dependent density functional theory (TDDFT) methods are used to investigate the influences of intramolecular and intermolecular hydrogen bonding on excited-state intramolecular proton transfer (ESIPT) for the 4-N,N'-(diethylamino)-2-hydroxybenzaldehyde (DEAHB). The structures of DEAHB and its hydrogen-bonded complex in the ground-state and the excited-state are optimized. In addition, the detailed descriptions of frontier molecular orbitals of the DEAHB monomer and DEAHB-DMSO complex are presented. Moreover, the transition density matrix is worked out to gain deeper insight into the orbitals change. It is hoped that the present work not only elaborates different influence mechanisms between intramolecular and intermolecular hydrogen bonding interactions on the ESIPT process for DEAHB, but also may be helpful to design and develop new materials and applications involved DEAHB systems in the future.

This study investigated the rapid start-up of the DAMO-anammox strategy using inoculum of anaerobic granular sludge in MBfR. The results showed that the reactor containing DAMO microorganisms was rapidly and successfully started up after 73 days with only feeding nitrate. Anammox microorganisms were obtained after 1.5-month of ammonium addition. The nitrogen removal rate achieved 603.9 mg N/L/d in this study. Microbial analysis results suggested that the newly discovered DAMO archaea, DAMO bacteria and anammox bacteria were not detected in this enriched culture. The DAMO-anammox process may be carried out by other microbes. This deduction remains to be further established in the future.

A method of face image recognition based on Elman neural network and block PCA algorithm is put forward. In this method, the first step is to use block PCA algorithm for the face image processing, and gain the face image features of different block number. These features are the inputs of Elman neural network, the output is the corresponding category. The experiment is based on ORL face images database, the simulation partition of the face images into the different sizes for the testing respectively. Through the above experiment results which show that, face image recognition based on the block PCA algorithm and artificial neural network is effective. The application of block PCA algorithm improves the identification accuracy of face image recognition, and which can be used in the further research.

The application of wavy structures in stretchable electrochemical energy storage devices is reviewed. First, the mechanical analysis of wavy structures, specific to flexible electronics, is introduced. Second, stretchable electrochemical energy storage devices with wavy structures are discussed. Finally, the present problems and challenges are reviewed, and possible directions for future research are outlined.

The general expression of magneto-optical permittivity tensor including the Faraday and Cotton-Mouton effects is derived and the coupled wave equations for the optical modes propagating in an arbitrary direction with respect to the magnetostatic surface wave are obtained. The optical multimode coupled wave equations will reduce to the bi-mode ones in the phase-matching conditions. The behaviors of four types of important optical bi-mode coupling are discussed and some new results are obtained. In the limits of α = 0 and π/2, all results obtained reduce to those reported in the literature.

The wave equation of nonlinear magnetostatic surface waves (MSSW) on ferromagnetic films is derived and its solution is found. The nonlinear dispersion relation of MSSW is discussed. Our result shows that the wave power has a little effect to the frequency shift of MSSW with lower frequency, but has a considerably larger effect to that with higher frequency within the band.

We have prepared flexible free-standing electrodes with anode and cathode active materials deposited on a highly conductive graphene membrane by a two-step filtration method. Compared with conventional electrodes using metal as current collectors, these electrodes have displayed stronger adhesion, superior electrochemical performance, higher energy density, and better flexibility. A full lithium ion battery assembled by adopting these graphene-based electrodes has showed high rate capability and long cyclic life. We have also assembled a thin, lightweight, and flexible lithium ion battery with poly-(dimethyl siloxane) sheets as packaging material to light a red light-emitting diode. This flexible battery can be easily bent without structural failure or performance loss and operated well under a bent state. The fabrication process of these graphene-based integrated electrodes only has two filtration steps; thus it is easy to scale up. These results suggest great potential for these graphene-based flexible batteries in lightweight, bendable, and wearable electronic devices.

Quasi-classical trajectory (QCT) studies on the stereodynamics of H + BrO → O + HBr reaction have been performed on the X1A' state of ab initio potential energy surface by Peterson [Peterson K A 2000 J. Chem. Phys. 113 4598] in a collision energy range from 0 kcal/mol to 6 kcal/mol. Two of the polarization-dependent generalized differential cross sections (PDDCSs), (2π/σ)(dσ00/dωt) (PDDCS00) and (2π/σ)(dσ20/dωt) (PDDCS20) are considered. The rotational polarizations of these products show sensitive behaviors to the calculated collision energy range. Furthermore, in order to gain more knowledge about vector correlations, the product angular distribution, P(θr), and the dihedral angle, P(r), are calculated, and the results indicate that both the rotational alignment and orientation of the product are enhanced as collision energy increases.

A quasi-classical trajectory (QCT) calculation is used to investigate the vector and scalar properties of the D + BrO → DBr + O reaction based on an ab initio potential energy surface (X1A' state) with collision energy ranging from 0.1 kcal/mol to 6 kcal/mol. The reaction probability, the cross section, and the rate constant are studied. The probability and the cross section show decreasing behaviors as the collision energy increases. The distribution of the rate constant indicates that the reaction favorably occurs in a relatively low-temperature region (T

Recently Tsiatmas et al proposed using a nanoring made of two different metallic sectors to generate a magnetic pulse from a laser pulse [1]. Non-uniform heating of the ring creates very large temperature gradients, which drive thermoelectric currents, and this creates a localized magnetic field. However, heat from the laser pulse may result in the melting of the nanoring. We propose a symmetric structure made of four metallic sectors, which results in a higher magnetic field generation together with a lower lattice temperature. We also show that the magnetic field depends strongly on the size of the metallic sectors and interpret the results with the help of the electromotive forces, the overall ring resistance, and Biot–Savart law. Published version

In this paper, the stereodynamics of Li + DF → LiF + D reaction is investigated by the quasi-classical trajectory (QCT) method on the 2A' potential energy surface (PES) at a relatively low collision energy of 8.76 kcal/mol. The scalar properties of the title reaction such as reaction probability and cross section are studied with vibrational quantum number of v = 1–6. The product angular distributions P(θr) and P(r) are presented in the same vibrational level range. Moreover, two polarization-dependent generalized differential cross sections (PDDCSs), i.e., the PDDCS00 and PDDCS22+ are calculated as well. These stereodynamical results demonstrate sensitive behaviors to the vibrational quantum numbers.

Calculations on the stereodynamics of the title reaction have been performed using the quasi-classical trajectory (QCT) method on the Aguado-Paniagua2-potential energy surface (AP2-PES) developed by Aguado et al. (J. Chem. Phys. 106 1013 (1997)) [1]. The product angular distributions which describe the vector correlations, P(θr), P(r) and P(θr,r) are presented. The calculated results indicate that the vector properties are sensitive to the change of the collision energy.

The Hirota–Miwa equation can be written in 'nonlinear' form in two ways: the discrete KP equation and, by using a compatible continuous variable, the discrete potential KP equation. For both systems, we consider the Darboux and binary Darboux transformations, expressed in terms of the continuous variable, and obtain exact solutions in Wronskian and Grammian form. We discuss reductions of both systems to the discrete KdV and discrete potential KdV equation, respectively, and exploit this connection to find the Darboux and binary Darboux transformations and exact solutions of these equations.