摘要：
Land use reflects human activities on land. Urban land use is the highest level human alteration on Earth, and it is rapidly changing due to population increase and urbanization. Urban areas have widespread effects on local hydrology, climate, biodiversity, and food production [1,2]. However, maps, that contain knowledge on the distribution, pattern and composition of various land use types in urban areas, are limited to city level. The mapping standard on data sources, methods, land use classification schemes varies from city to city, due to differences in financial input and skills of mapping personnel. To address various national and global environmental challenges caused by urbanization, it is important to have urban land uses at the national and global scales that are derived from the same or consistent data sources with the same or compatible classification systems and mapping methods. This is because, only with urban land use maps produced with similar criteria, consistent environmental policies can be made, and action efforts can be compared and assessed for large scale environmental administration. However, despite of the fact that a number of urban-extent maps exist at global scales [3,4], more detailed urban land use maps do not exist at the same scale. Even at big country or regional levels such as for the United States, China and European Union, consistent land use mapping efforts are rare [5,6](e.g., https://sdi4apps.eu/open_land_use/).
期刊：
Neural Computing and Applications,2020年32(17):13505-13520 ISSN：0941-0643
通讯作者：
Xiong, Zhili
作者机构：
[Xiong, Zhili; Zhao, Liang; Qu, Shaocheng] Cent China Normal Univ, Coll Phys Sci & Technol, Dept Elect & Informat Engn, Wuhan 430079, Peoples R China.;[Xiong, Zhili] Huanggang Normal Univ, Sch Elect Informat, Huanggang 438000, Peoples R China.
通讯机构：
[Xiong, Zhili] C;[Xiong, Zhili] H;Cent China Normal Univ, Coll Phys Sci & Technol, Dept Elect & Informat Engn, Wuhan 430079, Peoples R China.;Huanggang Normal Univ, Sch Elect Informat, Huanggang 438000, Peoples R China.
关键词：
Wireless sensor networks (WSNs);Internet of Things (IoT);Cross-layer congestion control;Fuzzy sliding mode control;NS-2.35
摘要：
Wireless sensor networks (WSNs) act as a building block of Internet of Things and have been used in various applications to sense environment and transmit data to the Internet. However, WSNs are very vulnerable to congestion problem, resulting in higher packet loss ratio, longer delay and lower throughput. To address this issue, this paper presents a fuzzy sliding mode congestion control algorithm (FSMC) for WSNs. Firstly, by applying the signal-to-noise ratio of wireless channel to TCP model, a new cross-layer congestion control model between transmission layer and MAC layer is proposed. Then, by combining fuzzy control with sliding mode control (SMC), a fuzzy sliding mode controller (FSMC) is designed, which adaptively regulates the queue length of buffer in congested nodes and significantly reduces the impact of external uncertain disturbance. Finally, numerous simulations are implemented in MATLAB/Simulink and NS-2.35 by comparing with traditional control strategies such as fuzzy, PID and SMC, which show that the proposed FSMC effectively adapts to the change of queue length and has good performance, such as rapid convergence, lower average delay, less packet loss ratio and higher throughput.
关键词：
Economic development;Ecological environment;Geographically and temporally weighted regression;Tropical and subtropical regions;China
摘要：
Along with the rapid economic development, China's ecological environment is becoming an increasingly severe issue with strong negative externalities accelerating the spatial spillover. This paper uses Geographically and Temporally Weighted Regression (GTWR) to measure and analyze the coupling coordination and spatiotemporal heterogeneity between economic development and ecological environment of 17 tropical and subtropical regions in China from 2003 to 2016. The results show that: First, there is a significant spatiotemporal heterogeneity between economic development and ecological environment; Second, economic development and ecological environment are in an intermediate coupling coordination stage, relative more regions belonged to economic lag type; Third, the ecological lag type mainly lies in developed areas in the east, while the economic lag type is mainly in the central and western regions. Fourth, the spatial relationship and agglomeration effect of economic development are both positive, and the spatial relationship of ecological environment also tends to be positive. Fifth, the interaction relationship between economic development and ecological environment tends to converge. The negative interaction effect of the economic development and ecological environment tends to concentrate in central and eastern developed area, while the positive interaction effect tends to concentrate in central and western developing area. Finally, the paper puts forward corresponding policy recommendations. (C) 2019 Elsevier Ltd. All rights reserved.
作者：
Alimena, Juliette*;Beacham, James;Borsato, Martino;Cheng, Yangyang;Vidal, Xabier Cid;...
期刊：
JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS,2020年47(9):090501 ISSN：0954-3899
通讯作者：
Alimena, Juliette
作者机构：
[Alimena, Juliette; Hill, Christopher S.] Ohio State Univ, Dept Phys, 191 W Woodruff Ave, Columbus, OH 43210 USA.;[Beacham, James] Duke Univ, Dept Phys, 120 Sci Dr, Durham, NC 27710 USA.;[Borsato, Martino] Heidelberg Univ, Phys Inst, Neuenheimer Feld 226, D-69120 Heidelberg, Germany.;[Cheng, Yangyang; McDermott, Kevin] Cornell Univ, 245 East Ave, Ithaca, NY 14853 USA.;[Vidal, Xabier Cid] U Santiago de Compostela, Inst Galego Fis Altas Enerxias, IGFAE, Rua Xoaquin Diaz Rabago S-N, E-15782 Santiago De Compostela, Spain.
通讯机构：
[Alimena, Juliette] O;Ohio State Univ, Dept Phys, 191 W Woodruff Ave, Columbus, OH 43210 USA.
关键词：
beyond the Standard Model;long-lived particles;Large Hadron Collider;high-luminosity LHC;collider phenomenology;high-energy collider experiments
摘要：
Particles beyond the Standard Model (SM) can generically have lifetimes that are long compared to SM particles at the weak scale. When produced at experiments such as the Large Hadron Collider (LHC) at CERN, these long-lived particles (LLPs) can decay far from the interaction vertex of the primary proton-proton collision. Such LLP signatures are distinct from those of promptly decaying particles that are targeted by the majority of searches for new physics at the LHC, often requiring customized techniques to identify, for example, significantly displaced decay vertices, tracks with atypical properties, and short track segments. Given their non-standard nature, a comprehensive overview of LLP signatures at the LHC is beneficial to ensure that possible avenues of the discovery of new physics are not overlooked. Here we report on the joint work of a community of theorists and experimentalists with the ATLAS, CMS, and LHCb experiments --- as well as those working on dedicated experiments such as MoEDAL, milliQan, MATHUSLA, CODEX-b, and FASER --- to survey the current state of LLP searches at the LHC, and to chart a path for the development of LLP searches into the future, both in the upcoming Run 3 and at the High-Luminosity LHC. The work is organized around the current and future potential capabilities of LHC experiments to generally discover new LLPs, and takes a signature-based approach to surveying classes of models that give rise to LLPs rather than emphasizing any particular theory motivation. We develop a set of simplified models; assess the coverage of current searches; document known, often unexpected backgrounds; explore the capabilities of proposed detector upgrades; provide recommendations for the presentation of search results; and look towards the newest frontiers, namely high-multiplicity "dark showers", highlighting opportunities for expanding the LHC reach for these signals.
关键词：
Land transfer;The rationalization of industrial structure;The optimization of industrial structure;Green total factor productivity;Dynamic system GMM
摘要：
Market-oriented allocation of land resources is one of the main economic reforms in China. However, the influence of land transfer marketization (LTM) on green total factor productivity (green TFP) and its mechanisms remain unknown. Based on panel data of 30 provincial administrative regions in China from 2004 to 2016, this study attempts to establish mechanism among LTM, industrial structure and green TFP, which is measured by the Slack Based Measure DEA (SBM-DEA) model containing undesirable output, and empirically estimates the impact of LTM, the rationalization and optimization of industrial structure and their interactions on green TFP further. The results show that: 1) LTM has a significant promoting effect on the improvement of green TFP in China, and the effect is also significant in the eastern, central and western regions as well, indicating that the application of land transfer policy to regulate regional economic development is widespread in China. 2) The rationalization of industrial structure has significantly promoted the development of green TFP in China, as well as at the regional levels, and the effect decreases from the western region to the central and eastern regions. The optimization of industrial structure also has a promoting effect on green TFP in China and all the regions, but the regional differences of the effect are contrary to that of the rationalization of industrial structure, with a decreasing trend from the eastern region to the central and western regions. 3) The interaction between LTM and the rationalization of industrial structure has significantly inhibited the improvement of green TFP in China, and the regional variations of the restraining effect are higher in the western region, followed by the central and eastern regions. The interaction between LTM and the optimization of industrial structure also has a negative effect on green TFP in China, and the regional variations of the effect showing the decreasing trend from the eastern region to the western and central regions. Therefore, China should continue to adhere to the market-oriented urban land transfer system reform, actively play the role of the government in the industrial upgrading and industrial transfer, and formulate a differentiated land transfer system and industrial development policies based on the economic development and industrial characteristics of various regions, so as to achieve the sustainable development of China’s economy and society.
作者机构：
[Zhang, Hongrui; Qu, Shaocheng; Luo, Jing; Xu, Wenjun] Cent China Normal Univ, Coll Phys Sci & Technol, Wuhan 430079, Peoples R China.;[Li, Huan] Army Special Operat Coll, Dept Special Technol, Guilin 541000, Peoples R China.
通讯机构：
[Qu, Shaocheng] C;Cent China Normal Univ, Coll Phys Sci & Technol, Wuhan 430079, Peoples R China.
关键词：
HSV;region growth;Shadow elimination;UESILTP
摘要：
Moving shadow elimination plays an important role in the field of moving object detection. However, the accuracy of shadow elimination is an open question, due to illumination and complex texture. Furthermore, the problem of misclassification of moving object caused by shadow has also become increasingly serious. To address this problem, this paper presents a moving shadow elimination algorithm based on the fusion of multi-feature pattern, which can enhance the accuracy of moving object detection system. In this approach, a dual-channel HSV color space feature and a uniform extended scale invariant local ternary pattern (UESILTP) texture feature are synthesized to elimination shadow. It greatly overcomes the misjudgment of dark object by color feature and the false detection caused by inconspicuous texture characteristics of moving object. Meantime, a method of region growth is adopted to fill the existing cavities in the color space. Finally, qualitative and quantitative comparisons with state-of-the-art methods show that the algorithm is effective.
作者机构：
[Jia, Ya; Liu, Ying; Xu, Ying] Cent China Normal Univ, Inst Biophys, Wuhan 430079, Hubei, Peoples R China;[Jia, Ya; Liu, Ying; Xu, Ying] Cent China Normal Univ, Dept Phys, Wuhan 430079, Hubei, Peoples R China;[Ma, Jun] Lanzhou Univ Technol, Dept Phys, Lanzhou 730050, Gansu, Peoples R China;[Ma, Jun] Chongqing Univ Posts & Telecommun, Sch Sci, Chongqing 430065, Peoples R China;[Ma, Jun] King Abdulaziz Univ, Fac Sci, Dept Math, NAAM Res Grp, POB 80203, Jeddah 21589, Saudi Arabia
通讯机构：
[Jia, Ya] C;Cent China Normal Univ, Inst Biophys, Wuhan 430079, Hubei, Peoples R China. Cent China Normal Univ, Dept Phys, Wuhan 430079, Hubei, Peoples R China.
关键词：
Hybrid neuronal model;electrical activity mode;external signal stimulus;electromagnetic radiation;bifurcation and chaos analysis
摘要：
Based on a hybrid neuronal model of the Hindmarsh-Rose (HR) model (the slow negative feedback dynamics) with the Wilson model (the fast variable dynamics), the discharge modes of neurons are studied by using bifurcation analysis. When the hybrid neuronal model is driven by external stimulus current, the hybrid neuronal model is capable of simulating an extensive range of bursting patterns with different systemic parameters. With the increase of external stimulus, the multiple discharge patterns of neurons arise, and the electrical modes of the neurons appear for successive transitions. When the hybrid neuronal model is driven by electromagnetic induction, the electrical activities of the neurons have different responses to the variations in the amplitude and the angular frequency of high and low frequency electromagnetic radiations. It is found that the neuronal discharge activity is transformed from chaotic state to periodic state by increasing the angular frequency, and the firing pattern of neuron can be shifted from the bursting state to chaotic state by increasing the amplitude of the low frequency signal.
期刊：
Trends in Biotechnology,2019年37(7):730-743 ISSN：0167-7799
通讯作者：
Liu, Guozhen;Wang, Jin
作者机构：
[Liu, Guozhen; Li, Yi] Univ New South Wales, Fac Engn, ARC Ctr Excellence Nanoscale Biophoton, Grad Sch Biomed Engn, Sydney, NSW 2052, Australia.;[Liu, Guozhen; Li, Yi] Univ New South Wales, Australian Ctr NanoMed, Sydney, NSW 2052, Australia.;[Li, Shiyuan] Shanghai Tolo Biotechnol Co Ltd, Shanghai 200233, Peoples R China.;[Wang, Jin] Shanghai Normal Univ, Coll Life & Environm Sci, Shanghai 200234, Peoples R China.;[Liu, Guozhen] Cent China Normal Univ, Coll Chem, Int Joint Res Ctr Intelligent Biosensor Technol &, Wuhan 430079, Hubei, Peoples R China.
通讯机构：
[Liu, Guozhen] U;[Wang, Jin] S;[Liu, Guozhen] C;Univ New South Wales, Fac Engn, ARC Ctr Excellence Nanoscale Biophoton, Grad Sch Biomed Engn, Sydney, NSW 2052, Australia.;Univ New South Wales, Australian Ctr NanoMed, Sydney, NSW 2052, Australia.
摘要：
Beyond its remarkable genome editing ability, the CRISPR/Cas9 effector has also been utilized in biosensing applications. The recent discovery of the collateral RNA cleavage activity of the Cas13a effector has sparked even greater interest in developing novel biosensing technologies for nucleic acid detection and promised significant advances in CRISPR diagnostics. Now, along with the discovery of Cas12 collateral cleavage activities on single-stranded DNA (ssDNA), several CRISPR/Cas systems have been established for detecting various targets, including bacteria, viruses, cancer mutations, and others. Based on key Cas effectors, we provide a detailed classification of CRISPR/Cas biosensing systems and propose their future utility. As the field continues to mature, CRISPR/Cas systems have the potential to become promising candidates for next-generation diagnostic biosensing platforms.
作者机构：
[Bazavov, A.] Michigan State Univ, Dept Computat Math Sci & Engn, E Lansing, MI 48824 USA.;[Bazavov, A.] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA.;[Ding, H-T; Li, S-T; Kaczmarek, O.] Cent China Normal Univ, Key Lab Quark & Lepton Phys MOE, Wuhan 430079, Hubei, Peoples R China.;[Ding, H-T; Li, S-T; Kaczmarek, O.] Cent China Normal Univ, Inst Particle Phys, Wuhan 430079, Hubei, Peoples R China.;[Hegde, R.] Indian Inst Sci, Ctr High Energy Phys, Bangaluru 560012, India.
通讯机构：
[Bazavov, A.] M;Michigan State Univ, Dept Computat Math Sci & Engn, E Lansing, MI 48824 USA.;Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA.
摘要：
We present results for pseudo-critical temperatures of QCD chiral crossovers at zero and non-zero values of baryon (B), strangeness (S), electric charge (Q), and isospin (I) chemical potentials mu(X=B,Q,S,I). The results were obtained using lattice QCD calculations carried out with two degenerate up and down dynamical quarks and a dynamical strange quark, with quark masses corresponding to physical values of pion and kaon masses in the continuum limit. By parameterizing pseudo-critical temperatures as T-c(mu(x)) = T-c(0)[1-kappa(X)(2)(mu(X)/T-c(0))(2) - kappa(X)(4)(mu(X)/T-c(0))(4)], we determined kappa(X)(2) and kappa(X)(4) from Taylor expansions of chiral observables in mu(X). We obtained a precise result for T-c(0) = (156.5 +/- 1.5) MeV. For analogous thermal conditions at the chemical freeze-out of relativistic heavy-ion collisions, i.e., mu(S)(T, mu(B)) and mu(Q)(T, mu(B)) fixed from strangeness-neutrality and isospin-imbalance, we found kappa(B)(2) = 0.012(4) and kappa(B)(4) = 0.000(4). For mu(B) less than or similar to 300 MeV, the chemical freeze-out takes place in the vicinity of the QCD phase 4 boundary, which coincides with the lines of constant energy density of 0.42(6) GeV/fm(3) and constant entropy density of 3.7(5) fm(-3). (C) 2019 The Author(s). Published by Elsevier B.V.
摘要：
The nervous system is made of a large number of neurons. Time-varying balance between excitatory and inhibitory neurons is important to activate appropriate modes of electrical activity. A realistic biological neuron is complex, often presenting various electrophysiological activities and diffusive propagation of ions in the cell. Therefore, the physical effects of electromagnetic induction become very important and should be considered when estimating signal encoding and mode selection. Synaptic plasticity and anatomical structure have been developed to enhance the self-adaption of neurons. Thus, the electrical mode with the most effective links and weights can be selected to benefit information encoding and signal propagation between neurons in the network. As a result, the demand for metabolic energy can be greatly reduced. In this review, neuron model setting with biophysical effects, modulation of astrocytes, autapse formation and biological function, synaptic plasticity, memristive synapses, and field coupling between neurons and networks are reviewed briefly to provide guidance in the field of neurodynamics.
期刊：
Bulletin of the Malaysian Mathematical Sciences Society,2019年42(1):67-78 ISSN：0126-6705
通讯作者：
Wang, Shaohui
作者机构：
[Liu, Jia-Bao] Anhui Jianzhu Univ, Sch Math & Phys, Hefei 230601, Anhui, Peoples R China.;[Wang, Chunxiang] Cent China Normal Univ, Sch Math & Stat, Wuhan 430079, Hubei, Peoples R China.;[Wang, Shaohui] Adelphi Univ, Dept Math & Comp Sci, Garden City, NY 11530 USA.;[Wei, Bing] Univ Mississippi, Dept Math, University, MS 38677 USA.
通讯机构：
[Wang, Shaohui] A;Adelphi Univ, Dept Math & Comp Sci, Garden City, NY 11530 USA.
关键词：
Extremal bounds;Zagreb index;Multiplicative Zagreb index;Eulerian graphs
摘要：
For a graph
$$G = (V(G), E(G))$$
, let d(u), d(v) be the degrees of the vertices u, v in G. The first and second Zagreb indices of G are defined as
$$ M_1(G) = \sum _{u \in V(G)} d(u)^2$$
and
$$ M_2(G) = \sum _{uv \in E(G)} d(u)d(v)$$
, respectively. The first (generalized) and second Multiplicative Zagreb indices of G are defined as
$$\Pi _{1,c}(G) = \prod _{v \in V(G)}d(v)^c$$
and
$$\Pi _2(G) = \Pi _{uv \in E(G)} d(u)d(v)$$
, respectively. The (Multiplicative) Zagreb indices have been the focus of considerable research in computational chemistry dating back to Narumi and Katayama in 1980s. Denote by
$${\mathcal {G}}_{n}$$
the set of all Eulerian graphs of order n. In this paper, we characterize Eulerian graphs with first three smallest and largest Zagreb indices and Multiplicative Zagreb indices in
$${\mathcal {G}}_{n}$$
.
