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Received signal strength based indoor positioning algorithm using advanced clustering and kernel ridge regression Research Articles

Yanfen Le, Hena Zhang, Weibin Shi, Heng Yao,leyanfen@usst.edu.cn,hyao@usst.edu.cn

Frontiers of Information Technology & Electronic Engineering 2021, Volume 22, Issue 6, Pages 827-838 doi: 10.1631/FITEE.2000093

Abstract: We propose a novel algorithm based on the . The proposed algorithm can be divided into three steps, an offline phase at which an (AC) strategy is used, an online phase of approximate localization at which is used, and an online phase of precise localization with . Specifically, after offline fingerprint collection and similarity measurement, we employ an AC strategy based on the -medoids clustering algorithm using additional reference points that are geographically located at the outer cluster boundary to enrich the data of each cluster. During the approximate localization, RSS measurements are compared with the cluster radio maps to determine to which cluster the target most likely belongs. Both the Euclidean distance of the RSSs and the Hamming distance of the coverage vectors between the observations and training records are explored for . Then, a kernel-based ridge regression method is used to obtain the ultimate positioning of the target. The performance of the proposed algorithm is evaluated in two typical indoor environments, and compared with those of state-of-the-art algorithms. The experimental results demonstrate the effectiveness and advantages of the proposed algorithm in terms of positioning accuracy and complexity.

Keywords：室内定位；接收信号强度（RSS）指纹；核岭回归；簇匹配；改进型分簇

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The Formation of the Improved Chinese Pressurized Water Reactor Technology—CPR1000

Pu Jilong

Strategic Study of CAE 2008, Volume 10, Issue 3, Pages 54-57

Abstract:

This paper introduces the formation of the Improved Chinese PWR technology—CPR1000 which is applied in Ling Ao Nuclear Power Station (Phase II) and Liaoning Hongyanhe Nuclear Power Station, and its key technological innovations.

Keywords： pressurized water reactor CPR1000 self-owned brand

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The research of connectivity-credibility restricted clustering algorithm in wireless sensor networks

Yu Jiming,Sun Yamin,Lei Yanjing,Yang Yuwang

Strategic Study of CAE 2010, Volume 12, Issue 9, Pages 73-77

Abstract:

This paper proposed a speeding clustering algorithm of connectivity-credibility constrained random dispose which based on some other clustering algorithms. Simulation shows that this algorithm can get large cover of clustering, logical distributing and good stability. Comparing to the lowerst-ID clustering and highest-connectivity clustering algorithm, the algorithm can get less number of cluster-heads, more logical clustering, good communication between nodes and cluster-heads, steady networks, reduce communication cost of rebuilding, and can balance network's energy consume, prolong the networks life.

Keywords： wireless sensor networks connectivity-credibility clustering algorithm

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Radio propagation measurement and cluster-based analysis for millimeter-wave cellular systems in dense urban environments

Peize Zhang, Haiming Wang, Wei Hong,pzzhang@seu.edu.cn,hmwang@seu.edu.cn,weihong@seu.edu.cn

Frontiers of Information Technology & Electronic Engineering 2021, Volume 22, Issue 4, Pages 471-487 doi: 10.1631/FITEE.2000489

Abstract: The deployment of millimeter-wave (mmWave) cellular systems in dense urban environments with an acceptable coverage and cost-efficient transmission scheme is essential for the rollout of fifth-generation and beyond technology. In this paper, cluster-based analysis of mmWave channel characteristics in two typical dense urban environments is performed. First, radio campaigns are conducted in two identified mmWave bands of 28 and 39 GHz in a central business district and a dense residential area. The custom-designed channel sounder supports high-efficiency directional scanning sounding, which helps collect sufficient data for statistical channel modeling. Next, using an improved auto- algorithm, multipath clusters and their scattering sources are identified. An appropriate measure for inter- and intra-cluster characteristics is provided, which includes the cluster number, the Ricean -factor, root-mean-squared (RMS) delay spread, RMS angular spread, and their correlations. Comparisons of these parameters across two mmWave bands for both line-of-sight (LoS) and non-light-of-sight (NLoS) links are given. To shed light on the blockage effects, detailed analysis of the propagation mechanisms corresponding to each NLoS cluster is provided, including reflection from exterior walls and over building corners and rooftops. Finally, the results show that the cluster-based analysis takes full advantage of mmWave beamspace channel characteristics and has further implications for the design and deployment of mmWave wireless networks.

Keywords：毫米波通信；分簇；绕射；多路通道；传播测量

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Deriving Improved Newton's Second Law and the Law of Gravity at One Time with Form of Fractal Formula

Fu Yuhua

Strategic Study of CAE 2003, Volume 5, Issue 6, Pages 55-58

Abstract:

Newton's second law and the law of gravity are summarized with experimental results. For discussing the possibility of deriving the two laws theoretically, according to the law of conservation of energy, the method of deriving improved Newton's second law and the law of gravity at one time with variable dimension fractal method is presented for an example (a small ball moves down along a long incline). For the sake of convenience, the results suitable for this example with the constant dimension fractal form are as follows： improved law of gravity F = - GMm/r^1.99989 , and improved Newton's second law F = ma^1.01458.

Keywords： Newton & acute s second law the law of gravity theoretical derivation

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Analysis on the Machined Surface Profile Error Using Fractals and Wavelet

Liao Xiaoyun,Tang Qian,Zhao Ying,Zheng Shize

Strategic Study of CAE 2002, Volume 4, Issue 5, Pages 75-78

Abstract:

An analysis method based on fractals and wavelet for machined surface profile error was presented. It can be employed to analyze the machined surface in details, and reconstruct the surface profile for doing some related work, such as performance-tolerance analysis and process quality control. The fractal dimension algorithms, the analysis and reconstruction algorithms of surface profile based on wavelets theories were developed. The given example showed that this method and related algorithms were very effective.

Keywords： machining machined error analysis fractal geometry wavelet analysis

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Distributed optimization based on improved push-sum framework for optimization problem with multiple local constraints and its application in smart grid

徐谦,俞楚天,袁翔,韦梦立,刘洪喆

Frontiers of Information Technology & Electronic Engineering 2023, Volume 24, Issue 9, Pages 1253-1260 doi: 10.1631/FITEE.2200596

Abstract: In this paper, the optimization problem subject to ,N, nonidentical closed convex set constraints is studied. The aim is to design a corresponding distributed optimization algorithm over the fixed unbalanced graph to solve the considered problem. To this end, with the push-sum framework improved, the distributed optimization algorithm is newly designed, and its strict convergence analysis is given under the assumption that the involved graph is strongly connected. Finally, simulation results support the good performance of the proposed algorithm.

Keywords： Distributed optimization Nonidentical constraints Improved push-sum framework

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A fractional-order multifunctionaln-step honeycomb RLC circuit network Article

Ling ZHOU, Zhi-zhong TAN, Qing-hua ZHANG

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 8, Pages 1186-1196 doi: 10.1631/FITEE.1601560

Abstract: We investigate a multifunctional -step honeycomb network which has not been studied before. By adjusting the circuit parameters, such a network can be transformed into several different networks with a variety of functions, such as a regular ladder network and a triangular network. We derive two new formulae for equivalent resistance in the resistor network and equivalent impedance in the LC network, which are in the fractional-order domain. First, we simplify the complex network into a simple equivalent model. Second, using Kirchhoff’s laws, we establish a fractional difference equation. Third, we construct an equivalent transformation method to obtain a general solution for the nonlinear differential equation. In practical applications, several interesting special results are obtained. In particular, an step impedance LC network is discussed and many new characteristics of complex impedance have been found.

Keywords： Honeycomb network Equivalent transformation Fractional differential equation Impedance characteristics

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Preliminary Study on Evacuation Design in Large Supermarke t

You Yuhang,Li Yuanzhou,Chen Jinsong,Feng Rui,Wang Haobo,Huo Ran

Strategic Study of CAE 2007, Volume 9, Issue 4, Pages 99-102

Abstract:

Based on the actual construction design project and the human distribution in some large supermarkets, two improved design projects are presented because the evacuation staircase width of the fire zones are not distributed symmetrically. One is the improvement to current fire zone design, making the distribution of evacuation staircase width more symmetrically by setting shared evacuation staircase. The other is to relocate the related fire zone, decrease the area of current fire zones and add one more fire zone. The occupant evacuation times of three evacuation scenarios are simulated by EVACNET4. Results show that when the fire zone area is large, to symmetrically distribute the evacuation staircase width of the fire zones is more effective for evacuation. Setting shared evacuation staircase will help for evacuation and improve the efficiency of using the staircase. Decreasing the fire zone area will shorten the evacuation distance, and the evacuation time will be reduced.

Keywords： large supermarket occupant safety evacuation improved design project computer simulation

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Fractional-order global optimal backpropagation machine trained by an improved fractional-order steepest descent method Research Articles

Yi-fei Pu, Jian Wang,puyifei@scu.edu.cn,wangjiannl@upc.edu.cn

Frontiers of Information Technology & Electronic Engineering 2020, Volume 21, Issue 6, Pages 809-962 doi: 10.1631/FITEE.1900593

Abstract: We introduce the fractional-order global optimal backpropagation machine, which is trained by an improved (FSDM). This is a fractional-order backpropagation neural network (FBPNN), a state-of-the-art fractional-order branch of the family of backpropagation neural networks (BPNNs), different from the majority of the previous classic first-order BPNNs which are trained by the traditional first-order steepest descent method. The reverse incremental search of the proposed FBPNN is in the negative directions of the approximate fractional-order partial derivatives of the square error. First, the theoretical concept of an FBPNN trained by an improved FSDM is described mathematically. Then, the mathematical proof of fractional-order global optimal convergence, an assumption of the structure, and of the FBPNN are analyzed in detail. Finally, we perform three (types of) experiments to compare the performances of an FBPNN and a classic first-order BPNN, i.e., example function approximation, , and comparison of global search and error fitting abilities with real data. The higher optimal search ability of an FBPNN to determine the global optimal solution is the major advantage that makes the FBPNN superior to a classic first-order BPNN.

Keywords：分数阶微积分；分数阶反向传播算法；分数阶最速下降法；均方误差；分数阶多尺度全局优化

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Study on the molecular characteristic in phlegm-dampness constitution

Wang Qi,Dong Jing,Wu Hongdong,Wang Dongpo,Yao Shilin,Ren Xiaojuan

Strategic Study of CAE 2008, Volume 10, Issue 7, Pages 100-103

Abstract:

To investigate the molecular mechanism for phlegm-dampness constitution,examining the genome DNA of peripheral blood cells of six phlegm-dampness constitution and six normal constitution by using Affymetrix GeneChip Mapping 500K Array.We had identified 442 genes with significant differences between the phlegm-dampness constitution and the normal constitution by using Affymetrix Gene Chip Human Genome U133 plus-2, base on research results of prophase, sieve the related gene and characteristics of single nucleotide polymorphisms( SNP) of phlegm-dampnessconstitution.5 related genes and 6 SNPs with significant differences were identified between the phlegm-dampness constitution and the normal constitution. Further biologianalysis on the genes identified between two constitution groups demonstrate that they are involved in enzyme activity,sterol transporter activity,participate in the biology process of lipid metabolism, cholesterol metabolic process,brown fat cell differentiation, gluconeogenesis and thermoregulation.These results indicate that the Molecular characteristic of phlegm-dampness constitution is related to metabolism disorder.

Keywords： phlegm-dampness constitution Genechip Mapping Array Molecular characteristic

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An Improving Method of BP Neural Network and Its Application

Li Honggang,Lü Hui,Li Gang

Strategic Study of CAE 2005, Volume 7, Issue 5, Pages 63-65

Abstract:

Seeing on that in BPNN the small learning gene will make the long training time, but the large learning gene will make the BPNN surging, this paper brings forward a way to modify the learning gene, that is, adding a proportion gene before the learning gene, The proportion gene will change when the weight of the BPNN needs to be modified. This can shorten the training time and make convergence better as well. The simulating results show that the new algorithm is much better than the old one during BPNN scouting the missile command.

Keywords： BPNN improved algorithm simulation

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Stability analysis of uncertain fractional-order neutral-type delay systems with actuator saturation Research Articles

Zahra Sadat Aghayan, Alireza Alfi, J. A. Tenreiro Machado,a_alfi@shahroodut.ac.ir

Frontiers of Information Technology & Electronic Engineering 2021, Volume 22, Issue 10, Pages 1402-1412 doi: 10.1631/FITEE.2000438

Abstract: This study analyzes the problem of of fractional-order delay systems of neutral type under actuator . A Lyapunov–Krasovskii (LK) function is constructed and conditions of the asymptotic of such systems are given, which are formulated by linear matrix inequalities (LMIs), using the Lyapunov direct method. An algorithm is introduced to compute the gain of the state feedback controller for extending the domain of attraction. The theoretical results are validated using some numerical examples.

Keywords：分数阶系统；稳定性；中立时滞；鲁棒性；饱和性

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Study of the Relationship Between Fractal Model Parameters and Roughness Parameter R_a

Pan Yuliang,Wu Liqun,Zhang Yundian

Strategic Study of CAE 2004, Volume 6, Issue 5, Pages 49-51

Abstract:

The W-M fractal model and the physical meaning of fractal parameters (D, G，y) are briefly introduced in this paper. The relationships between model parameters and roughness parameter R_a are studied theoretically. The simulation shows that their relationships are correct.

Keywords： W-M fractal model fractal parameters roughness R_a

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Analogue Difference Balanced Function and Its Applications

Zhang Wenying,Li Shiqu

Strategic Study of CAE 2004, Volume 6, Issue 3, Pages 45-52

Abstract:

This paper presents the concept of analogous difference of Boolean function, and call the Boolean function an analogue difference balanced function if whose analogous difference is balanced at any nonzero point. The aim of this paper is to study their cryptographic properties and construction methods. Making use of analogue bent functions, the paper proposes an efficient and sufficient condition for a logical function defined on 〓 to be perfect nonlinear, and get all perfect nonlinear functions defined on 〓.

Keywords： Bent function perfect nonlinear function 2-radical expansion analogue difference analogue auto-correlation function analogue difference balanced function

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Title Author Date Type Operation

Received signal strength based indoor positioning algorithm using advanced clustering and kernel ridge regression

Yanfen Le, Hena Zhang, Weibin Shi, Heng Yao,leyanfen@usst.edu.cn,hyao@usst.edu.cn

Journal Article

The Formation of the Improved Chinese Pressurized Water Reactor Technology—CPR1000

Pu Jilong

Journal Article

The research of connectivity-credibility restricted clustering algorithm in wireless sensor networks

Yu Jiming,Sun Yamin,Lei Yanjing,Yang Yuwang

Journal Article

Radio propagation measurement and cluster-based analysis for millimeter-wave cellular systems in dense urban environments

Peize Zhang, Haiming Wang, Wei Hong,pzzhang@seu.edu.cn,hmwang@seu.edu.cn,weihong@seu.edu.cn

Journal Article

Deriving Improved Newton's Second Law and the Law of Gravity at One Time with Form of Fractal Formula

Fu Yuhua

Journal Article

Analysis on the Machined Surface Profile Error Using Fractals and Wavelet

Liao Xiaoyun,Tang Qian,Zhao Ying,Zheng Shize

Journal Article

Distributed optimization based on improved push-sum framework for optimization problem with multiple local constraints and its application in smart grid

徐谦,俞楚天,袁翔,韦梦立,刘洪喆

Journal Article

A fractional-order multifunctionaln-step honeycomb RLC circuit network

Ling ZHOU, Zhi-zhong TAN, Qing-hua ZHANG

Journal Article

Preliminary Study on Evacuation Design in Large Supermarke t

You Yuhang,Li Yuanzhou,Chen Jinsong,Feng Rui,Wang Haobo,Huo Ran

Journal Article

Fractional-order global optimal backpropagation machine trained by an improved fractional-order steepest descent method

Yi-fei Pu, Jian Wang,puyifei@scu.edu.cn,wangjiannl@upc.edu.cn

Journal Article

Study on the molecular characteristic in phlegm-dampness constitution