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电子科技学刊：英文版

电子科技学刊：英文版

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《电子科技学刊》原名《中国电子科技》自2003年底创刊，是教育部主管，电子科技大学主办，反映我国电子领域科研成果的学术类季刊，面向国内外发行。
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  • 被引量：32
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    国际刊号/ISSN：1674-862X
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电子科技学刊：英文版 >2023年第4期

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  • 摘要：cqvip:In order to effectively imitate the dynamic operation characteristics of the HVDC(high voltage direct current) power transmission system at a real ±500 kV HVDC transmission project,the electro-mechanical-electromagnetic transient hybrid simulation was carried out based on advanced digital power system simulator(ADPSS).In the simulation analysis,the built hybrid model's dynamic response outputs under three different fault conditions are considered,and by comparing with the selected fault recording waveforms,the validities of the simulation waveforms are estimated qualitatively.It can be ascertained that the hybrid simulation model has the ability to describe the HVDC system's dynamic change trends well under some special fault conditions.
  • 摘要：cqvip:An active and reactive combined spot price model and the corresponding algorithm are introduced in this paper based on the theory of optimal power flow.Different from the traditional economic dispatch in the field of spot price,the objective function is to minimize generation costs based on pricing reactive power.Then considering the characteristics of wind turbines,processing methods of wind farms in optimal power flow is discussed.Finally,the feasibility of the model and the algorithm is verified through the simulation results of IEEE 30 system.
  • 摘要：cqvip:Information hiding schemes based on vector quantization(VQ) usually require lengthy VQ encoding and decoding processes.In this paper,we propose an efficient information hiding method based on closest paired tree structure vector quantization(CPTSVQ).The simulation result shows that the execution time of the proposed scheme is much shorter than that attained by previous approaches.
  • 摘要：cqvip:With the advanced developments in information technology and networking,a user can easily communicate with others via the Internet.In daily life,users can make orders of products through the e-commerce market.Thus,how to protect users' private information from being wiretapped over the Internet has become a very important research topic in recent years.
  • 摘要：cqvip:Recently, Chang et al. proposed a Sudoku-based secret image sharing scheme. They utilized the Sudoku grid to generate meaningful shadow images, and their scheme satisfied all essential requirements. Based on Chang et al.'s scheme, we propose a novel (n, n) secret image sharing scheme based on Sudoku. In the proposed scheme, a secret image can be shared among n different cover images by generating n shadow images, and the secret image can be reconstructed without distortion using only these n shadow images. Also, the proposed scheme can solve the overflow and underflow problems. The experimental results show that the visual quality of the shadow images is satisfactory. Furthermore, the proposed scheme allows for a large embedding capacity.
  • 摘要：cqvip:Distortion-free data embedding is a technique which can assure that not only the secret data is correctly extracted but also the cover media is recovered without any distortion after secret data is extracted completely.Because of these advantages,this technique attracts the attention of many researchers.In this paper,a new distortion-free data embedding scheme for high dynamic range(HDR) images is proposed.By depending on Cartesian product,this scheme can obtain higher embedding capacity while maintaining the exactly identical cover image and stego image when using the tone mapping algorithms.In experimental results,the proposed scheme is superior to Yu et al.'s scheme in regard to the embedding rate?an average embedding rate of 0.1355 bpp compared with Yu et al.'s scheme(0.1270 bpp).
  • 摘要：cqvip:Hiding data in the deoxyribose nucleic acid(DNA) can facilitate the authentication and annotation of important plant variety rights.A grant of plant variety rights for a new plant variety gives you the exclusive right to produce for sale and sell propagating material of the variety.Digital watermarking techniques have been proposed for a wide range of applications,including ownership protection,copy control,annotation,and authentication.However,existing data hiding methods for DNA change the functionalities of DNA sequences,which induce morphological changes in biological patterns.This paper proposes a high capacity data hiding scheme for DNA without changing the functionalities of DNA sequences.This scheme adaptively varies the embedding process according to the amount of hidden data.Experimental results show that the proposed scheme gives a significantly improved hiding performance than previous schemes.And the robustness and security issues are also analyzed.
  • 摘要：cqvip:Making full use of wind power is one of the main purposes of the wind turbine generator control.Conventional hill climbing search(HCS) method can realize the maximum power point tracking(MPPT).However,the step size of HCS method is constant so that it cannot consider both steady-state response and dynamic response.A fuzzy logical control(FLC) algorithm is proposed to solve this problem in this paper,which can track the maximum power point(MPP) quickly and smoothly.To evaluate MPPT algorithms,four performance indices are also proposed in this paper.They are the energy captured by wind turbine,the maximum power-point tracking time when wind speed changes slowly,the fluctuation magnitude of real power during steady state,and the energy captured by wind turbine when wind speed changes fast.Three cases are designed and simulated in MATLAB/Simulink respectively.The comparison of the three MPPT strategies concludes that the proposed fuzzy logical control algorithm is more superior to the conventional HCS algorithms.
  • 摘要：cqvip:As a typical clean and renewable energy,wind power is becoming more and more widely used in electrical industry.However,its characteristics of random and intermittent have brought serious problems to the power system,such as voltage fluctuation and insufficient reactive power.Based on the K-means clustering algorithm,this paper classifies the doubly-fed induction generators(DFIG) according to the operation of propeller pitch angle control.At the same time,to obtain the optimal parameter,advanced particle swarm optimization(PSO) is used.Then the dynamic model of DFIG under the network fault condition is built.What is more,the role that crowbar circuit plays in low voltage ride through(LVRT) is discussed.Finally,simulations in DigSILENT verify the model.
  • 摘要：cqvip:In recent years, microstrip antennas have been more widely applied in satellite communications, mobile phones, unmanned aerial vehicle (UAV), and weapons. A micro-electro-mechanical systems-based (MEMS-based) high-resistance silicon C-band microstrip antenna array has been designed for the intelligent ammunition. The center frequency is 4.5 GHz. A cavity has been designed in substrate to reduce the dielectric constant of silicon and high-resistance silicon has been used as the material of substrate to improve the gain of antenna. It is very easy to be manufactured by using MEMS technology because of the improved structure of the antenna. The results show that the gain of the antenna is 8 dB and voltage standing wave ratio (VSWR) is less than 2 by the analysis and simulation in high frequency structure simulator (HFSS).
  • 摘要：JEST (International) Journal of Electronic Science and Technology, formerly, Journal of Electronic Science and Technology of China, is published quarterly devoting to the state-of-the-art achievements in electronic science and technology, including the most highlight areas:
  • 摘要：cqvip:An optical image encryption system with adaptive steganography using red,green,and blue(RGB) channel integration is proposed.The optical image encryption system employs a double random phase encoding algorithm to encrypt and decrypt color images.The RGB channel in a color image is first integrated into a large grayscale image.Then the integrated image is encrypted by two random phase masks.The secret data is then embedded into the encrypted image with a specific hiding sequence generated by the zero-LSB(least significant bits) sorting technique which is a content-dependent and low distortion data embedding method.Experimental results show that the proposed method has a good performance in both hiding capacity and decrypted image quality.
  • 摘要：cqvip:Because of limited resource of embedded platforms, the computational complexity of advanced control algorithms raises significant challenges for the use of embedded systems in complex control field. A Scilab/Scicos based embedded controller is developed on which various control software can be easily modeled, simulated, implemented, and evaluated to meet the ever-expanding requirements of industrial control applications. Built on the Cirrus Logic EP9315 ARM systems-on-chip board, this embedded controller is possible to develop complex embedded control systems that employ advanced control strategies in a rapid and cost-efficient fashion. Due to the freeand open source nature of the software packages used, the cost of the embedded controller is minimized.
  • 摘要：cqvip:In 2011,Chan proposed an image authentication method by producing the parity check bits from pixels whose bits have been rearranged.Due to this rearrangement,the value of the most-significant bit of each tampered pixel can be determined according to its parity check bits.With the help of the most-significant bit of the pixel,the pixel can be recovered by selecting two possible(7,4) Hamming code words.However,if the distance between two Hamming code words is within a certain range,incorrect selection may occur.Chan's method added one additional bit to indicate the correct one.It is trivial that this may degrade the quality of the authenticated image.In this paper,we group four most-significant bits into different groups to form a mapping codebook and the mapping codebook is used to produce authentication data instead of the(7,4) Hamming code book.The experimental results show that the proposed method has a greater ability to recover tampered areas.
  • 摘要：cqvip:Reversible data hiding techniques are capable of reconstructing the original cover image from stego-images. Recently, many researchers have focused on reversible data hiding to protect intellectual property rights. In this paper, we combine reversible data hiding with the chaotic Hénon map as an encryption technique to achieve an acceptable level of confidentiality in cloud computing environments. And, Haar digital wavelet transformation (HDWT) is also applied to convert an image from a spatial domain into a frequency domain. And then the decimal of coefficients and integer of high frequency band are modified for hiding secret bits. Finally, the modified coefficients are inversely transformed to stego-images.
  • 摘要：cqvip:Cloud computing becomes a hot research topic recently.Before the concept of cloud computing was introduced,similar concepts or computing models have been proposed such as distributed computing and grid computing.
  • 摘要：cqvip:An e-tag used on the freeway is a kind of passive sensors composed of sensors and radio-frequency identification (RFID) tags. The principle of the electronic toll collection system is that the sensor emits radio waves touching the e-tag within a certain range, the e-tag will respond to the radio waves by induction, and the sensor will read and write information of the vehicles. Although the RFID technology is popularly used in campus management systems, there is no e-tag technology application used in a campus parking system. In this paper, we use the e-tag technology on a campus parking management system based on the cloud-based construction. By this, it helps to achieve automated and standardized management of the campus parking system, enhance management efficiency, reduce the residence time of the vehicles at the entrances and exits, and improve the efficiency of vehicles parked at the same time.
  • 摘要：cqvip:Since the raising of the cloud computing, the applications of web service have been extended rapidly. However, the data centers of cloud computing also cause the problem of power consumption and the resources usually have not been used effectively. Decreasing the power consumption and enhancing resource utilization become main issues in cloud computing environment. In this paper, we propose a method, called MBFDP (modified best fit decreasing packing), to decrease power consumption and enhance resource utilization of cloud computing servers. From the results of experiments, the proposed solution can reduce power consumption effectively and enhance the utilization of resources of servers.
  • 摘要：cqvip:JEST—Journal of Electronic Science and Technology, formerly, Journal of Electronic Science and Technology of China, is published quarterly devoting to the state-of-the-art achievements in electronic science and technology, including the most highlight areas:
  • 摘要：cqvip:Meta-heuristics typically takes long time to search optimality from huge amounts of data samples for applications like communication, medicine, and civil engineering. Therefore, parallelizing meta-heuristics to massively reduce runtime is one hot topic in related research. In this paper, we propose a MapReduce modified cuckoo search (MRMCS), an efficient modified cuckoo search (MCS) implementation on a MapReduce architecture-Hadoop. MapReduce particle swarm optimization (MRPSO) from a previous work is also implemented for comparison. Four evaluation functions and two engineering design problems are used to conduct experiments. As a result, MRMCS shows better convergence in obtaining optimality than MRPSO with two to four times speed-up.
  • 摘要：cqvip:Personal cloud computing is an emerging trend in the computer industry. For a sustainable service, cloud computing services must control user access. The essential business characteristics of cloud computing are payment status and service level agreement. This work proposes a novel access control method for personal cloud service business. The proposed method sets metadata, policy analysis rules, and access denying rules. Metadata define the structure of access control policies and user requirements for cloud services. The policy analysis rules are used to compare conflicts and redundancies between access control policies. The access denying rules apply policies for inhibiting inappropriate access. The ontology is a theoretical foundation of this method. In this work, ontologies for payment status, access permission, service level, and the cloud provide semantic information needed to execute rules. A scenario of personal data backup cloud service is also provided in this work. This work potentially provides cloud service providers with a convenient method of controlling user access according to changeable business and marketing strategies.
  • 摘要：cqvip:In recent years, Taiwan has enhanced the manufacturing advantages in the competitive global market because of excellent manufacturing processes, product quality, and the flexible delivery date and speed. However, how to maintain the competitive advantages in the global market has become an issue. Due the advanced development of the Internet, the cloud computing technology has significant progress and become more matured. Therefore, if the cloud computing technology can be applied in the supply chain of the manufacturing industry, the information among manufacturing, assembly, logistics, sales, and customers can be shared and accessed easily. In this study, a cloud-based supply chain integration service platform of the manufacturing industry is developed, and this platform includes the supplier management, procurement and materials management, manufacturing management, facilities planning, customer service, transportation and physical distribution, and information flow to form a supply chain integration service cloud. Thus, the members of the whole supply chain integration service cloud are able to work together, and rapidly deploy and dynamically allocate resources, and the computer hardware and software resources of the upstream and downstream can be appropriately shared. By doing so, the inventory fluctuations caused by the bullwhip effect can also be reduced. Eventually, it will achieve the goals of shortening delivery time, raising production capacity utilization, and decreasing the material preparation time.
  • 摘要：cqvip:This study applies cloud computing combining the theory of learning hierarchy to the digital learning assessment and remedial instruction, and explores the learning effectiveness on the learning model of self-learning in Chinese idioms. In this study, 60 students in grades three to six of an Elementary School in Nantou County of Taiwan participated in the research experiments. The results of this study reveal that the learning on Chinese idioms through the cloud-based E-learning assessment and remedial tutoring system is superior to the traditional reading to learn. The learning achievements of the students learning Chinese idioms by the proposed system are significantly improved. Therefore, the cloud-based E-learning teaching materials, methods of assessment, and remedial instruction are worth to develop and research.
  • 摘要：cqvip:This research aims to find out the key attributes influencing the user trust towards applications on the mobile application store. In this research, both the experimental data set and the evaluation results of analysis are described. The analysis results include the test results of analysis of variance (ANOVA) and correlation analysis. In ANOVA, the attributes affecting user rating are derived and applied to the correlation analysis to evaluate the degree of correlation towards user rating, and in the last stage the positive or negative relationship with user satisfaction is figured out.
  • 摘要：cqvip:A biometric identity-based signcryption scheme is presented, which combines signature and encryption. In the proposed scheme, biometric information is used to construct the private key to ensure uniqueness, and a user's identity is the corresponding public key to make the message transfer non-interactive. The proposed scheme is shown to provide confidentiality and unforgeability in the random oracle model.
  • 摘要：cqvip:This form is intended for original material submitted to the Journal of Electronic Science and Technology (JEST) and must accompany any such material in order to be published by the JEST. Please read the form carefully and keep a copy for your files.
  • 摘要：cqvip:In this paper, we proposed a campus equipment ubiquitous-management system which is based on a genetic algorithm approach in cloud server. The system uses radio frequency identification (RFID) to monitor the status of equipment in real time, and uses wire or wireless network to send real-time situation to display on manager's PC or PDA. In addition, the system will also synchronize with database to record and reserve message. Furthermore, the status will display not only to a single manager but also a number of managers. In order to increase efficiency between graphical user interface (GUI) and database, the system adopts SqlDependency object of ADO.NET so that any changed situation of the database could be known immediately and synchronized with manager's PC or PDA. Because the problem of the equipment utilization is an NP-complete (non-deterministic polynomial) problem, we apply genetic algorithm to enhance the efficiency of finding optimum solution for equipment utilization. We assign constraints into the system, and the system will post back the optimum solution simultaneously on the screen. As a consequence, we compare our genetic algorithm based approach (GA) with the simulated annealing based approach (SA) for maximizing the equipment utilization. Experimental result shows that our GA approach achieves an average 79.66% improvement in equipment utilization in an acceptable run time.
  • 摘要：cqvip:This paper proposes a configurable secure gateway architecture which allows the system administrators to dynamically configure the security mechanisms upon deployment or during the run-time. Rather than allowing the system administrators to turn on or off individual security mechanisms, the proposed architecture allows the administrators to configure the gateway based on the security threats to be overcome. The current common architecture leads to tremendous administration overhead and increases the chance of misconfiguration vulnerability. We propose a novel software architecture to aid the product designers to avoid the misconfiguration vulnerability and the end-users to ease the administration overhead. The software architecture makes use of the threats to the gateways and the occurrence relation between the threats to configure the security software components on the gateways. With the software architecture, the end-users can focus on determining the desired security features rather than the software configuration. Moreover, the architecture allows the product designers or security service to incrementally revise the software configuration when new threats appear.

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